I’ve seen that error, and I think it occurs whether things are working or not - spurious “information”.
Hate to sound like a broken record, but sure wish we could turn off or filter the error messages to just the ones that we are looking for. There’s just too much noise surrounding the signal (in the logs, I mean).
I have 3 sketches I use on these AMB82-MINI’s: Amb82HTTPDisplayJPEG.ino, Amb82HTTPDisplayJPEGContinuous.ino and AmbRTSPVideoOnly.ino. It looks like they all work using the last one: Amb82RTSPVideoOnly.ino. Of course I was testing it with the RTSP streaming option for VLC. I have the outputs of one of them compiled with both Amb82HTTPDisplayJPEGContinous.ino and Amb82RTSPVideoOnly.ino. Maybe the other 2 work with just http but I don’t have any way to test them.