Troubles with buildpack on Heroku

[m3r1v3]

Yesterday, I found what my discord bot music feature isn't working. I got the next error in Heroku logs: ffmpeg process 12 successfully terminated with return code of -11. How to fix this error and what it's mean? Also I test the bot on my local machine and all works okay.
UPD: I use Heroku-22 stack

[JD-Durant]

This Buildpack doesn't support Heroku-22 stack, I had similar issues. Revert it back to Heroku-20 Stack and all should be good c:

[IAMSDR]

still same error in Heroku-20 stack
ERROR: ffmpeg exited with code -11
i'm using ffmpeg for yt-dlp merging