Album covers flat out dont work

I tried to put on a cover but it didnt work please for godsake help me i cant put a cover on a mp3 file it says it cant write the file

Probably something wrong with the file. Have you checked it for integrity?

I guess it can be the fact i put the rest of the info on audacity

I use audacity to rip vinyl and include basic data. Then I edit the balance in mp3tag. I’ve never had any issues adding album art.

Or could it be that this is the cause: