MJPEG IP Camera don't appear on dashboard

I used the MJPEG IP Camera to integrate an ESP32 IP camera. No errors appears when integrating, however when adding the camera to the dashboard I get the image enclosed below:


When clicking on the entity/info I see the image, but the dashboard symbol continues to be broken as shown. The log file reports timeout getting the image.

I can’t figure out where to define the configuration manually as the configuration file appears almost empty in /root/config/ :

The platform is Home Assistant Operating System 8.5 on a Raspberrypi4.
Any pointer is welcome, thanks!