Hardware transcoding error (AMD GPU)

[Efficient_Good_5784]

As @TheDreadPirate states, your iGPU cannot handle decoding or encoding AV1 video.
There are two options in Jellyfin's transcoding page for AV1 (one for decoding and one for encoding). Disable both.

Any transcoding involving AV1 will have to be handled entirely on the CPU.

If you need AV1 HWA, you'll need to buy and use a newer CPU or GPU that has AV1 HWA support.