ffb8ec6373fae742e937d3764de48e01311d43fa
16
Commits
| Author | SHA1 | Message | Date | |
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 glenn schrooyenandClaude Opus 5
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878a6ce452 |
MAINT-04: refuse a maintenance charge the ceiling cannot deliver
config.yaml shipped max_w 2000 against maintenance_charge_w 2500. The cheap-window shaping files Claim.limit(hi = -maintenance_charge_w) against the supervised SAFETY limit's lo = -max_w, so lo > hi - the arbiter's clause 3, correctly resolved to 0 W and logged as a CONTRADICTION. Maintenance silently never charged in a cheap window on a default install, and the only evidence read like a bug in the arbiter rather than like the two numbers the operator set. validate_startup_config() now refuses maintenance_charge_w > max_w, the same shape as CFG-01's sign_disagree_w >= max_w. Equality is reachable (-max_w is a single valid point) and is not refused. Demonstrated by starting the add-on on the pre-fix pair: exit 78 and the refusal banner. maintenance_discharge_w was checked rather than assumed and is NOT the same case: the drain phase OWNS the actuator (Claim.set at P_MAINTENANCE), so the ceiling clamps it to +2000 W and the arbiter's explain() names the clamp every cycle. Loud, and it still moves energy - warned, not refused. The shipped maintenance rates drop to 2000 so the defaults pass the rule; max_w was deliberately not raised, because it is the supervised safety ceiling. test_validate.py now reads config.yaml itself, so a default the validator refuses cannot ship again. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_015VXjA3LWccN1rJsk3okyPC |
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glenn schrooyenandClaude Opus 5
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cc4e88490b |
SAFETY-02 review: a latch that a restart clears is not a latch
BLOCKER. `auto` was persisted and `sign_wd.tripped` was not, so reconstructing the Controller against the same store - which is what a container restart does - brought it back ARMED, into the same fault, unattended: tripped=False, banner back to NOT READY, and it resumed commanding -1000 then -2000 W before re-tripping 180 s later. "Restart the add-on" is the first thing an operator looking at a FAILSAFE banner and a 0 W inverter will try, and under a supervisor that restarts a crashed add-on it is a loop of three-minute wrong-direction bursts. DOCS.md's "it does not clear itself" was false across a restart. `sign_tripped` and `sign_reason` are Store keys now, beside the maintenance state and for the reason store.py's own docstring gives. Written the moment the trip happens - reason first, flag second, so a crash between the two can never persist a latch with no explanation - restored in Controller.__init__, cleared only by the operator's start. The regression is covered: reverting the restore fails seven checks in test_watchdog.py. Review follow-ups, no behaviour change: - The arming gate is tested against the REAL arbiter. It is the decision the ticket turns on and it was asserted in three comment blocks and verified by nothing - every case passed `following` in as a literal. Twelve claim configurations now derive it from resolve(), including the redirect case `winner == "loop"` alone would have got wrong and the `lo` limit that raises magnitude without flipping sign. - The MQTT `status: "failsafe"` value is tested. The check that claimed to cover it restated the line above it and never touched the payload. - The worked example described a config that does not ship: at the defaults maintenance_charge_w 2500 against max_w 2000 is an arbiter contradiction and 0 W, not a -2500 W charge. Rewritten at 1500 W. The contradiction is a real pre-existing bug - a default cheap-window maintenance charge silently never happens - filed separately and deliberately not fixed here. - Forward hazard recorded at the gate: `winner == "loop"` disarms the watchdog under any higher-priority SET, and a peak-shaving strategy at P_PEAK IS grid-following in sign, so it would blind this for every peak event. - disagrees() is public so the replay harness stops carrying its own copy of the predicate it grades. - held_s takes the clock instead of reading one. - The two limits are now each stated in both places rather than one each. - The no-false-positive argument is tied to control.py's freeze permitting the command to cross zero; under the shrink-only encoding control.py records as rejected, this would false-trip on a load step. - Measured figures corrected: 93.4 % / 4212 of 17280, per-cluster 0.3/0.9/10.5/0.0, and the near-circularity of those figures is now stated rather than leaned on. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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9aed43990b |
SAFETY-02: a loop can be fresh, tracking and inside its rating and still push the wrong way
The stale-input watchdog asks whether the meter is still talking. The saturation freeze asks whether the inverter can follow. The output clamp asks whether the number is too big. A loop can pass all three while charging the battery out of the grid, because the only thing wrong is the sign. On 2026-08-20 a commercial controller did exactly that four times in one day, for up to 77 minutes at a stretch, reaching a commanded -14 768 W against a ±5000 W inverter. app/watchdog.py compares the emitted setpoint against the authoritative P1 figure and, when they oppose each other with both over 300 W for 180 s continuously, files a failsafe SET claim at P_SAFETY, commands 0 W and latches there until an operator starts control again. Validated against that day rather than against an argument: sim/replay_sign.py in the infra repo drives this module over the committed captures of both 2026-08-20 and the healthy 2026-08-23 and reaches 18 trips on the fault day - every one inside a window NOTES.md §4.7 accounts for - and 0 on the healthy day. The four episodes do share one signature: 0.3 / 0.9 / 10.5 / 0.0 % sign agreement inside them against 92.9 % healthy. Three decisions the ticket could not make: - It is DISARMED whenever the grid-following loop is not what is driving. Sign agreement is a property of a loop that follows the meter, and a maintenance grid charge opposes the meter by design - 2500 W of charge into a house drawing 500 W is +3000 W on the meter against a -2500 W command, for hours. The gate tests the emitted number, not the winning claim's name, because a limit claim can let the loop "win" and still replace its value. - The trip LATCHES. Commanding 0 W removes the command side of the comparison, so the disagreement always clears the moment the trip works. - sign_disagree_w at or above max_w is refused at startup. The arbiter never lets a command exceed max_w, so such a threshold leaves the watchdog incapable of firing while the status page still reports it armed. What it does not catch, said out loud: an inverter that ACTS opposite to its command moves the meter further the same way, leaving command and meter in agreement. That is the saturation freeze's job. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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88cd97cc7a |
SAFETY-12: the loop thinks on a clock, not only when the number moves
run_control() ran cycle() only when the meter value differed from the previous poll. A meter that repeats a value therefore ran no control cycles at all - while the heartbeat kept re-emitting the last command and the firmware kept putting it on the wire every 2 s. Layer 1 stayed fed and every indicator read healthy, so a command computed from an old reading went on being executed through whatever the load did next. TEL-05 measured it: 70 s at a literally constant 350.0 W, 14 arrivals, zero cycles. cycle_floor_s (default 15 s) is a deadline on the GAP between cycles, reset by every cycle whichever trigger fired - not a second scheduler. On a healthy meter it never elapses, so the cycle rate and the commanded sequence are unchanged; test_loop.py asserts that by driving the real loop twice on one binary (a huge cycle_floor_s reproduces the old behaviour) and diffing the writes. 15 s is bracketed: above the ~11 s worst gap on a merely-unlucky healthy meter (~5 s arrivals, 1 s detection, one dropped poll retried on the next tick), below meter_max_age_s and the firmware's 30 s ingest veto, and equal to stale_input_s. A floor cycle runs the full law. Freshness is already decided upstream - past meter_max_age_s the reading is None, which is a P_SAFETY 0 W claim - and the integrator advances per cycle, not per second, so bounding the gap bounds the accumulation. Not a freeze detector: nothing here decides whether a repeated reading is true. DOCS.md's "accepted deviation" passage is qualified rather than deleted - the window is now bounded at 3 x cycle_floor_s instead of open-ended, and its "nothing accumulates while it is stalled" argument is called out as having covered windup and not staleness. Same correction in control.py's comment. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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c70239cac2 |
0.4.0: the meter transports that fit this house
TEL-04 and TEL-05 merged without a version bump, so Home Assistant would not have offered the update - the same trap DEPLOY-01 caught at 0.2.1, recurring because merging a feature does not touch the version. ha_signed reads one signed entity. homewizard_local polls the meter's own API, where every HTTP response is a genuine arrival - the property the firmware watchdog needs, and the one HA cannot provide for a repeated reading. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |
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glenn schrooyenandClaude Opus 5
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98109a9b91 |
TEL-05: read the meter, not Home Assistant's opinion of the meter
A fourth meter_source, `homewizard_local`, polling a HomeWizard P1's own local API (GET /api/v1/data) instead of watching an HA entity. The point is the age sensor. sensor.p1_sample_age_s is FW-01's watchdog input, and on every transport we had it measured "time since the value CHANGED", not "time since the meter REPORTED". Home Assistant offers nothing better: a repeated reading emits no state_changed, advances last_reported on neither serialiser, and state_reported cannot be subscribed to at all. Measured twice - 70 s of a frozen meter on the ENV-01 rig, and ten repeated readings against the live house. Our own capture of this house's meter goes 42.2 s and 97.0 s between changes, both past the default meter_max_age_s of 30, so the age sensor would have commanded 0 W on a perfectly healthy meter. Here every HTTP response is an arrival. The meter answered, now, with its current reading; whether the number moved is not consulted. Five identical readings are five arrivals. Reuses TEL-01's pipeline rather than restructuring it: same split_signed sign convention as ha_signed, same make_sample, same ingest stamping, meter_max_age_s, clock-recomputed age, plausibility bounds and the §20 unsigned-decode rejection. A failed or timed-out poll submits nothing, so it is a missing reading - never 0 W - and does not reset the age. meter_poll_s (default 5 s, the meter's own rate) is checked against meter_max_age_s once at startup, like the ha_signed entity ids. ⚠️ An arrival stamp cannot see a FROZEN meter, and no arrival detector can - one answering 200 OK with a stale number is arriving. The local API does expose what HA never had (the total_power_*_kwh registers stop advancing) and the transport tracks it as `unchanged_s`, but it is deliberately not folded into the age and not thresholded: this controller regulates grid toward ~0 W, and at a converged -10 W the export register needs six minutes to move by its 1 Wh resolution while the power figure legitimately repeats. Thresholding that would rebuild the false-trip limit cycle at the exact operating point we aim for. test_p1.py 179 -> 236 checks. Still defaults to off. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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8b51a51e20 |
TEL-04: a third meter_source for a single signed entity
TEL-01 shipped ha_dsmr and mqtt_p1, and neither can read the meter that is
actually fitted here. The house has a HomeWizard P1 exposing ONE signed
entity, sensor.p1_meter_active_power (+ import, - export); ha_dsmr wants two
unsigned registers and refuses a negative one outright, which is every
exporting telegram. So sensor.p1_sample_age_s could not be produced at this
site, and FW-01's watchdog needs it - measured, not theoretical: the house P1
went 51.1 s and 36.2 s without a state change overnight, both past
meter_max_age_s 30, so without the age sensor the watchdog would false-trip
the battery to 0 W.
Adds meter_source: ha_signed, reading p1_net_entity (and optionally
p1_phase_net_entities in L1..L3 order for the capacity-tariff peak). The
derivation is split_signed(), sitting next to make_sample's subtraction for
the same reason it does - the moment a user is asked to write two template
sensors that split a signed value, the sign convention is back in unreviewed
YAML underneath a safety input, which is exactly what TEL-01 removed.
The transport is a subclass of HaDsmrSource overriding only _wanted() and
build(), so every rule TEL-01 established is inherited rather than
re-implemented: ingest timestamping, meter_max_age_s, the clock-recomputed
sensor.p1_sample_age_s republished ~1 Hz, the plausibility ceiling, the
"prime the cache from get_states but never build a sample out of it" rule,
"a reconnect emits nothing", and unavailable/unknown treated as a MISSING
reading and never as 0 W.
Defaults to off. An existing install is unaffected until it opts in.
test_p1.py: 122 -> 174 checks. Includes an end-to-end run of the new
transport against a fake Home Assistant websocket, and the sign convention
asserted against real captured readings from
sim/scenarios/ha-p1_meter_active_power-2026-08-{20,23}.json (-5710 W at
13:46 local under full sun is export; +775 W at midnight is import).
Non-vacuity: ten mutations of the new rules, each applied alone and reverted
byte-identical. Nine turn the suite red. The tenth - splitting the per-phase
signed values rather than passing them through - is an equivalent mutant,
because make_sample subtracts the two lists again and does not sign-check
per-phase figures. That is recorded in a ponytail: comment at the site rather
than left for the next reviewer to rediscover.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa
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glenn schrooyenandClaude Opus 5
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6c980e87b0 |
DEPLOY-01: bump version to 0.3.0, changelog for SAFETY-04 and TEL-01
Fixes the version collision noticed while planning DEPLOY-01: release/1.0 still carried version 0.2.1, identical to what is already running on the live system, so Home Assistant would not have offered the update at all. - config.yaml: version 0.2.1 -> 0.3.0 (minor: TEL-01 adds a feature, SAFETY-04 changes the control law's internals) - CHANGELOG.md: 0.3.0 entry for SAFETY-04 and TEL-01, in the existing voice No code under app/ touched, no option defaults changed. Verified: meter_source: off, integrator_max_w: 0, target_grid_w: -10 all unchanged. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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f47f1f0129 |
TEL-01: P1 ingestion, with the derivation and the age the EMS owns
A Belgian P1 meter publishes two UNSIGNED registers, not one signed figure. Until now the add-on asked the installer to bridge that gap with a template sensor, which put the sign convention of the whole control loop in a text box. This moves it into the EMS: net = import - export, derived once, in one place, with a test that fails if anyone inverts it. Two transports behind one contract, chosen by `meter_source`: the HA WebSocket subscribing to the DSMR integration's entities, and MQTT on a configurable topic. Everything downstream reads P1Ingest, so switching is a config edit. `meter_source: off` is the default and keeps the existing meter_entity path, so no installed system changes until it opts in. The other half is the timestamp. Every accepted sample is stamped at ingest with a monotonic clock, `meter_max_age_s` is applied to it, and the age is published as sensor.p1_sample_age_s for the ESP32's stale-input watchdog. That entity is recomputed against the clock every second rather than only when a telegram lands, because HA pushes state only on change: a meter frozen at a constant reading emits nothing and looks, to anything watching the value, exactly like a meter that has died. The age tells them apart. Deliberately absent: any fallback to an inverter-side power figure. The inverter's own AC power correlates 0.998 with battery power and 0.09 with the real meter, so failing over to it means regulating against your own output. A gap stays a gap - a reconnect emits no synthetic sample, and a rejected telegram never resolves to 0 W or refreshes the timestamp. Quarter-hour averages are time-weighted over clock-aligned blocks rather than a mean of samples, so a cadence change cannot bias the capacity-tariff figure, and only offtake is accumulated so a quarter of pure export averages to 0 kW. Per-phase import is kept separately: on an unbalanced three-phase load the phase sum and the connection net are different numbers, and only one of them is billed. test_p1.py: 99 checks, runnable with a bare interpreter and no meter. Includes an end-to-end run of the HA transport against a fake Home Assistant websocket. Stacked on SAFETY-04; nothing here touches control.py. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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e46175559b |
SAFETY-04 review fixes: the freeze deadlocked, the bound was too loose
S-1. The frozen branch admitted a correction only if it shrank |i_w|. That is unsatisfiable for BOTH signs of error whenever |correction| > 2*|i_w|, i.e. whenever the integrator is near zero, so the loop stopped moving and the freeze could never clear - it clears when the inverter tracks, and not tracking is what saturation means. Measured: 0 W held into a 2 kW import indefinitely, where release/1.0 recovers on the next cycle. Re-encoded as the same asymmetric rule the output freeze has always used: may not wind further in the direction it is already pushing, may fall, cross zero or reverse. Same interpretation, an encoding that cannot deadlock. S-2. integrator_max_w defaulted to 1.5x max_w, which ADDED windup: in release/1.0 the accumulator was the post-clamp command and could never pass the rail. Default is now "follow max_w" (config 0 = unset). Measured on the 4000 W load-drop sim, first cycle after the drop: 1000 W at the new default, 1800 W at 3000. DOCS row inverted - the useful direction is below max_w, and the 14 768 W anecdote is a vendor controller, not evidence about this code. S-3. The claim that i_w=None preserved release/1.0 exactly was false, because the S-1 gate ran regardless of seeding. It is true again, and now asserted rather than asserted-about: 3024-case exhaustive comparison against a transcription of the old law, over both freeze states, both signs and either side of the deadband. Added the carried-i_w convergence/overshoot sim that the shipped configuration was missing. S-4. Cycles are distinct meter values, not seconds: cycle() runs only when the meter reading changes, so the window has no wall-clock bound. Comment and DOCS corrected; the stall is detection latency, not a windup hazard, because the same condition stalls the whole loop. test_control.py: 33 -> 41 checks, all passing. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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37bac79ad8 |
SAFETY-04: clamp the integrator, not only the output
The loop was in velocity form: the accumulator WAS the commanded power, so "clamp the integrator" and "clamp the output" were the same line of code and could not be set apart. This makes the accumulator an explicit carried value (`i_w`), bounds it with its own `integrator_max_w`, and keeps the output clamp where it was. Killing either mechanism now still leaves the other holding - which is the point of the ticket, and what the new regression test asserts. Freeze semantics: while saturated the integrator may unwind but not wind further. A strict freeze would strand the command at whatever it reached, because the condition that releases it is the inverter tracking again, and not tracking is exactly what saturation means. The integrator is re-seeded from the arbiter's actual output whenever the loop did not get what it asked for, so entering any failsafe (all of which resolve to 0 W) zeroes it, and the first cycle after release does not dump the stale period as power. test_control.py: 24 -> 33 checks, all passing. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Du77usMj8XNKNFZGmUiWDa |
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glenn schrooyenandClaude Opus 5
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5184a2cfc2 |
Rest the meter just below zero, not at zero
The deadband is a one-way ratchet: any resting point inside it holds indefinitely. Import and export are separate registers on the meter, so a loop resting at +14 W bills 0.34 kWh/day while behaving perfectly. target_grid_w (default -10 W) moves that residue onto the export register. Worst billed rest point drops from 15 W to under 5 W. Behaviour is unchanged at target_grid_w: 0. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> |
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 adminandClaude Opus 5
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017b798fe6 |
Precedence arbiter: one rule instead of an if/else ladder
Two controllers writing one actuator is the failure this system exists to
avoid. "Exactly one writer" was true, but only as a convention held up by
careful reading - which does not survive an EV charger and a heat pump wanting
the same battery.
Strategies now return claims and arbiter.py resolves them:
highest-priority `set` wins (none at all means 0 W), then every `limit` whose
priority is >= that set's applies, most restrictive first; contradictory
limits command 0 W and are flagged as the bug they are.
The second clause is the whole point. "Money outranks maintenance" used to be a
hand-written exception inside a Jinja template; it is now a consequence of the
priorities - the charge-only limit binds the loop but cannot bind a
higher-priority peak claim.
Also: maintenance shaping moved out of control.py, which is a controller again
and not a policy engine; the loop now tracks the arbiter's actual output rather
than its own last wish, so it does not jump when it regains control; and every
decision explains itself ("loop -> 0 W, limited by maintenance(charge-only)")
in the UI and the log.
19 new assertions in test_arbiter.py, each one a precedence question someone
will eventually ask in the field. Deployed to the reference site as 0.2.0 and
holding grid within a few watts of zero.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_016NckgXecasQb2eSsPYNSW6
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adminandClaude Opus 5
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36cc837446 |
Point the manifests at the real repository URL
Also documents the two things that stop an install dead: the repository must be public for Home Assistant to clone it anonymously (a private repo shows nothing in the store and gives no useful error), and config.yaml's `version` must be bumped for every change or Supervisor reuses the previously built image. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016NckgXecasQb2eSsPYNSW6 |
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adminandClaude Opus 5
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594f8f9fc9 |
Six silent failures found by installing this on a live system
Migrated the reference site off the YAML packages and onto the add-on. Every bug below presented identically: the add-on starts, logs "started", serves its UI, and cannot do its job. - run.sh needs #!/usr/bin/with-contenv sh. s6-overlay sanitises the environment for services, so a plain shebang means SUPERVISOR_TOKEN is absent and every Core API call is 401 - while homeassistant_api: true makes permissions look granted. Startup now prints the token length and probes the API. - Supervisor keys the image by config.yaml `version`, so rebuilding without a bump reuses the old image. Two fixes appeared not to work because of it. - Alpine is musl and has no aiohttp wheel on PyPI; deps now come from apk so nothing compiles on a client's Pi. - Alpine ships paho-mqtt 1.x, which has no CallbackAPIVersion. That raised at construction and took the control loop down with it - so MQTT setup is now wrapped too. Observability must never be able to stop the controller. - MQTT discovery is published from on_connect: paho silently drops QoS-0 publishes issued before the CONNACK, so the previous code announced nothing while logging "MQTT connected". - Repeated failures now log once a minute. Six warnings a second rolled the log buffer and destroyed the startup diagnostics needed to find the 401. - auto_start could never fire, because the store's defaults always supplied auto: False for the fallback to find. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016NckgXecasQb2eSsPYNSW6 |
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adminandClaude Opus 5
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0a1e61dbc9 |
Packaged as a Home Assistant add-on, with a field guide
Turns the reference RS485 controller into something a technician can install at a client site: a typed config form instead of YAML, an ingress UI that names misconfiguration in words, and persistent state that cannot be broken by a timezone. Why an add-on rather than YAML packages or blueprints: - Blueprints cannot create helpers, and the maintenance cycle is a state machine whose phase and completion date must survive restarts. - YAML packages need filesystem access, a configuration.yaml edit and a restart - none of which belong in a client install. - Add-ons authenticate with SUPERVISOR_TOKEN, so there is no long-lived token to generate, store or leak on someone else's machine. - Requires HA OS/Supervised. Container and Core installs cannot run add-ons at all, which is a market decision, not an oversight. The control law and the maintenance machine are pure functions with no Home Assistant imports, and both ship with runnable checks (22 and 22 assertions). Every assertion corresponds to a rule whose absence caused an observed failure on hardware - the saturation duration term, the clamp-before-slew ordering, the deadband, the sign convention. One behaviour deliberately differs from the implementation it replaces: when its inputs go missing this commands 0 W rather than replaying the last setpoint. The reference version kept replaying, which the hardware watchdog cannot catch - from the ESP32's side, Home Assistant is still talking to it. Includes the ESPHome firmware (now parameterised: node name, inverter rating, watchdog timeout) and the optional RS485 e-stop. FIELD-GUIDE.md carries the commissioning gates, all judged on the wire rather than on how Home Assistant looks, plus the written statement a site without an e-stop needs signed. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_016NckgXecasQb2eSsPYNSW6 |