Hello! Very interested in this project as I've been looking for a decent MQTT GUI, and I know a little Python.
It seems that something about my configuration file causes the application to crash, and it becomes completely unable to start again unless I delete the config files. I'll post the files here, it should be noted that I have since revoked the credentials found in the files, so I am sharing the username and password on purpose, in case they have something to do with it (length of password?)
I'll dig into the repo a little more this afternoon and submit a PR if I figure out what's causing this.
P.S. I am adding .txt to the filenames just so that GitHub will let me attach them, the crashes are occurring while they're using their original filenames.
default-settings.json.txt
default-payloads.json.txt