This disc is not working
Using LibreDrive mode (v06.3 id=E3767A939283)
Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
Saved AACS dump file as C:\Users\hipch/.MakeMKV/MKB20_v77_The_Amateur_C6AE.tgz
The volume key is unknown for this disc - video can't be decrypted
Failed to open disc
See attached log
The Amateur 4K
Re: The Amateur 4K
Have you tried downloading the latest KEYDB.cfg file, copying it into MakeMKV's data directory (i.e. C:\Users\hipch\.MakeMKV\ in your case) and restarting MakeMKV?
If this doesn't work, could you make your TGZ dump file available please, e.g. by uploading it into (say) OneDrive or Google Drive, and then replying with a public download link? This would allow people to try adding your disk to the public KEYDB.cfg file.
See Public KEYDB Disc Submissions.