MQTT & WLED suddenly stopped working in 0.109.x

Configuration
1

Not really sure what suddenly changed. Things were working just a few days ago and suddenly noticed today that nothing is getting through to WLED from home-assistant.

I’m using the official MQTT add-on and WLED 0.10.0. I have some saved payloads to call the WLED API, like topic wled/kitchen_leds/api, payload FX=15&R=254&G=246&B=165&R2=21&G2=32&B2=64&A=255&IX=37&SX=73. This used to work, but today, I get no response.

Looking at the add-on’s logs, I see the following:

[ERROR] Auth error with mqtt
1588978564: Socket error on client <unknown>, disconnecting.
1588978593: New connection from 10.0.1.150 on port 1883.
1

So I’m guessing there’s an auth error. Did something change in HA 0.109.x that I missed that would cause this? Any idea where I should start troubleshooting?

More details:
Add-on configuration:

logins: []
anonymous: false
customize:
  active: false
  folder: mosquitto
certfile: fullchain.pem
keyfile: privkey.pem
require_certificate: false

WLED configuration is using a user/password combo that I created in HA specifically for MQTT.

2

Ended up removing the integration and the add-on, then re-adding (all with exact same settings) and now everything works.

The age-old “try turning it on and off again” (but the nuclear version)