Hue: Unable to reach bridge Invalid content type: text/html

out of the many Hue integration connection issues, this seems rather strange. How come a text/html error arises ? Anyone seeing this also?

## Log Details (ERROR)

Fri Sep 27 2019 23:16:24 GMT+0200 (CEST)

Unable to reach bridge 192.168.1.212 (Invalid content type: text/html)

I see this error too after last update and my philips hue bulbs shows unavailable…