Failed to Dispense: Unknown Error (Although it did dispense correctly)

[snirsh]

Hi guys,
First, This project is amazing! I've been going over it testing and running on a raspberry for almost two weeks now and I'm super excited that I got my feeder to work :)

Anyway, I'm trying to debug this myself but I'm not sure what the problem is.
Logs show:

petnet-feeder-service    | 2021-06-21 11:00:25,176   ERROR    feeder.util.mqtt.client: Failed to decode message: bytearray(b'{"_|deviceHid":"89dfa32aa126ff9964811ffffdf7e1c69c43b82a","s|msg_type":"trace","i|tl":32,"s|ts":"Start - D\xdf, Portion: 0 tbsp(309448g), Turns: 23, Bowl: 0g, Hopp"}')
petnet-feeder-service    | Traceback (most recent call last):
petnet-feeder-service    |   File "/tmp/feeder/util/mqtt/client.py", line 102, in handle_message
petnet-feeder-service    |     payload = json.loads(packet.payload.data)
petnet-feeder-service    |   File "/usr/local/lib/python3.8/json/__init__.py", line 343, in loads
petnet-feeder-service    |     s = s.decode(detect_encoding(s), 'surrogatepass')
petnet-feeder-service    | UnicodeDecodeError: 'utf-8' codec can't decode byte 0xdf in position 106: invalid continuation byte

As far as I've managed to debug the problem I think it comes with small amounts of dispensed food.

Things I've noticed:
1/ It does work correctly on 1/4 cup of food.
2/ It doesn't work on 1/8 and less.
3/ The GUI shows the error included in the message.

Things I thought might help but didn't: (FYI, I'm running on a Raspberry Pi Zero W )
1/ Changed the device locale and added en_US.UTF-8 and en_US.ISO-8859-15.
2/ Tried to reset both the service and the feeder.
3/ Checked if it's not working for schedule only (It doesn't work for scheduled/snack/measuring).

Any help would be appreciated!

[siyuxing]

I got the same Exception, my problem is related to a issue with mosquitto (MQTT) service. Restarting the service by running sudo systemctl restart mosquitto.service fixed the problem for me.

[snirsh]

@siyuxing Hi, thanks for the comment! did you run this command on your machine? or the docker container? if the latter, how did you run it on the container? I can't seem to be able to do so

[siyuxing]

The issue I got is related to MQTT service crashes. Even after restarting the service manually. The feeder container process lose track of the MQTT client and cannot send out the requests.

I fixed the issue by running the command sudo systemctl stop mosquitto.service on my feeder host and then restarting the container process.