Failed to load resource: the server responded with a status of 500 ()

[31mkhsj54xlujodeexx6]

This is still a problem for me. Using firefox 115.5.0 ESR.

[31mkhsj54xlujodeexx6]

Correction.  I was just missing the ffmpeg codecs on my linux install. My bad.

[31mkhsj54xlujodeexx6]

I know this is the wrong thread, but it's the one that Google popped up when I searched the error from hitting F12, for any future people who stumble upon this.