SOLVED: Playback error on browser but not mobile

[Enla]

Hello, I have made a bunch of changes to my docker environment and notably enabled hardware transcoding on jellyfin, which seemed to work fine. That is, until I tried to watch something from my browser, where I noticed that it gave me playback errors every time. I tried disabling the transcoding, but I still get the same issue. Could it be because I reencoded all my files to HEVC? And if so, why does it not fail on mobile too ?
Here are my logs:
https://pastebin.com/RsyMU4Bf

Please let me know if any more logs are needed.