Error 502: Bad Gateway

[jvmahon]

Update: Fixed. See second message, below.

After a reboot today, I now receive the following "502: Bad Gateway" error from the Matter Server and can no longer access the Web UI for the server

Add-on: Matter Server
Matter WebSocket Server for Home Assistant Matter support.

Add-on version: 6.4.1
You are running the latest version of this add-on.
System: Home Assistant OS 12.4 (aarch64 / raspberrypi4-64)
Home Assistant Core: 2024.8.1
Home Assistant Supervisor: 2024.08.0

Please, share the above information when looking for help
or support in, e.g., GitHub, forums or the Discord chat.

s6-rc: info: service banner successfully started
s6-rc: info: service matter-server: starting
s6-rc: info: service matter-server successfully started
s6-rc: info: service legacy-services: starting
[08:33:21] INFO: Starting Matter Server...
s6-rc: info: service legacy-services successfully started
[08:33:24] INFO: Using 'end0' as primary network interface.
[08:33:24] INFO: Successfully send discovery information to Home Assistant.
2024-08-11 08:33:32.883 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Logging...
2024-08-11 08:33:32.884 (MainThread) INFO [matter_server.server.stack] Initializing CHIP/Matter Controller Stack...
[1723379613.531995][126:126] CHIP:CTL: Setting attestation nonce to random value
[1723379613.565533][126:126] CHIP:CTL: Setting CSR nonce to random value
[1723379613.665275][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /tmp/chip_kvs
[1723379613.665662][126:126] CHIP:DL: writing settings to file (/tmp/chip_kvs-okCpiK)
[1723379613.665867][126:126] CHIP:DL: renamed tmp file to file (/tmp/chip_kvs)
[1723379613.666261][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_factory.ini
[1723379613.688835][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_config.ini
[1723379613.690121][126:126] CHIP:DL: ChipLinuxStorage::Init: Using KVS config file: /data/chip_counters.ini
[1723379613.695369][126:126] CHIP:DL: writing settings to file (/data/chip_counters.ini-Ya764H)
[1723379613.697099][126:126] CHIP:DL: renamed tmp file to file (/data/chip_counters.ini)
[1723379613.697163][126:126] CHIP:DL: NVS set: chip-counters/reboot-count = 113 (0x71)
[1723379613.697946][126:126] CHIP:DL: Got Ethernet interface: end0
[1723379613.698483][126:126] CHIP:DL: Found the primary Ethernet interface:end0
[1723379613.699039][126:126] CHIP:DL: Got WiFi interface: wlan0
[1723379613.837088][126:126] CHIP:DL: Failed to reset WiFi statistic counts
2024-08-11 08:33:33.838 (MainThread) INFO [chip.storage] Initializing persistent storage from file: /data/chip.json
2024-08-11 08:33:33.839 (MainThread) INFO [chip.storage] Loading configuration from /data/chip.json...
2024-08-11 08:33:34.105 (MainThread) INFO [chip.CertificateAuthority] Loading certificate authorities from storage...
2024-08-11 08:33:34.106 (MainThread) INFO [chip.CertificateAuthority] New CertificateAuthority at index 1
2024-08-11 08:33:34.111 (MainThread) INFO [chip.CertificateAuthority] Loading fabric admins from storage...
2024-08-11 08:33:34.111 (MainThread) INFO [chip.FabricAdmin] New FabricAdmin: FabricId: 0x0000000000000002, VendorId = 0x134B
2024-08-11 08:33:34.112 (MainThread) INFO [matter_server.server.stack] CHIP Controller Stack initialized.
2024-08-11 08:33:34.114 (MainThread) INFO [matter_server.server.server] Starting the Matter Server...
2024-08-11 08:33:34.127 (MainThread) INFO [matter_server.server.helpers.paa_certificates] Skip fetching certificates (already fetched within the last 24h).
2024-08-11 08:33:34.128 (MainThread) INFO [chip.FabricAdmin] Allocating new controller with CaIndex: 1, FabricId: 0x0000000000000002, NodeId: 0x000000000001B669, CatTags: []
2024-08-11 08:33:34.767 (MainThread) ERROR [matter_server.server] Error doing task: Task exception was never retrieved
Traceback (most recent call last):
File "/usr/local/lib/python3.11/site-packages/aiorun.py", line 219, in new_coro
await coro
File "/usr/local/lib/python3.11/site-packages/matter_server/server/server.py", line 182, in start
await self._device_controller.initialize()
File "/usr/local/lib/python3.11/site-packages/matter_server/server/device_controller.py", line 172, in initialize
await load_local_updates(self._ota_provider_dir)
File "/usr/local/lib/python3.11/site-packages/matter_server/server/ota/init.py", line 28, in load_local_updates
await asyncio.get_running_loop().run_in_executor(
File "/usr/local/lib/python3.11/concurrent/futures/thread.py", line 58, in run
result = self.fn(*self.args, **self.kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/site-packages/matter_server/server/ota/init.py", line 22, in _load_update
update = json.load(f)
^^^^^^^^^^^^
File "/usr/local/lib/python3.11/json/init.py", line 293, in load
return loads(fp.read(),
^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/json/init.py", line 346, in loads
return _default_decoder.decode(s)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.11/json/decoder.py", line 353, in raw_decode
obj, end = self.scan_once(s, idx)
^^^^^^^^^^^^^^^^^^^^^^
json.decoder.JSONDecodeError: Expecting ',' delimiter: line 4 column 13 (char 51)

[jvmahon]

I was able to fix this.

It looks like this was due to a "local update" .json file with a .json formatting error placed into /addon_configs/core_matter_server/updates

Consider some some exception catching around the code that loads / parses local update .json files to give a clearer error message. Thanks.

(I think this issue can be closed now, just wanted to be sure the error exception catching point was raised for you to consider).