I am getting Connect failed: AMQJS0007E Socket error:undefined

When trying to connect to the MQTT Webclient, I am now getting
Connect failed: AMQJS0007E Socket error:undefined.
I am not sure when this started, but I noticed it after I upgraded to 106.
This might be unrelated to the upgrade but not sure.

Can anyone please help me understand what this error actually means and what could be causing this?
I did not see anything obvious in the logs.

Any advice appreciated.

Same here, my MQTT system is down since I upgrade to 106. I’ll roll back to my 105 snapshoot as 106 also broke some of my tabs in front-end lovelace.

Dont know how you’re using mosquitto, but the docker image got upgraded about 3 days ago and some people are experiencing that error.

If you can roll your mqtt back, try that.

Does anybody have any solution for this ?

My configuration was messed up.
I removed my config and did it again and that made it work.

Hi, I;ve the same error, after a first installation. Do you know the solution?

Greets,

Ronald

What worked for me was to remove the configuration from MQTT WebClient and then populate it again from scratch. Somehow it got corrupted.