I’ve been having the same log messages and issues with the Eufy integration. To workaround it I use TinyCam Pro, add my Eufy cam to TinyCam, start the TinyCam server and in my config yaml file add something like:
stream:
camera:
- platform: mjpeg
name: Back yard
mjpeg_url: http://TINYCAM_IP:8083/axis-cgi/mjpg/video.cgi?cameraId=CAM_ID&user=admin&pwd=PASSWORD
- platform: mjpeg
And it works great! You can follow this tutorial (its for Wyze cams but works for Eufy cams) Wyze Cam Integration With Home Assistant Without Flashing