As far as I can tell this started with the 0.86 upgrade. I am currently on 0.86.3.
I keep getting floods of errors:
Jan 28 15:05:36 <host> hass[22186]: #033[31m2019-01-28 15:05:36 ERROR (MainThread) [frontend.js.latest.201901211] http://<host>:8123/frontend_latest/app-3b4bb4ed.js:397:0 NotSupportedError: Operation is not supported#033[0m
It eventually changes to 'Client exceeded max pending messages ’ messages. If I refresh the frontend the errors for stop a while. I can’t work out what may be triggering the errors.
A few seconds before the ‘flood’ there is also a python error recorded in the log:
aiohttp.http_exceptions.LineTooLong: 400, message='Got more than 8190 bytes (8219) when reading Status line is too long.'#033[0m
But I’m not sure if it appears every time
I’m making a few changes and also trying out lovelace so I may have a bad definition somewhere