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Can't create MKV File:
Opening files on harddrive at /Volumes/RUSH CLOCKWORK ANGELS
Evaluation version, 27 day(s) out of 30 remaining
Saved AACS dump file as /Users/phillipsiebels/Library/MakeMKV/MKB_v43_Rush_-_Clockwork_Angels_Deluxe.tgz
The volume key is unknown for this disc - video can't be decrypted
DEBUG: Code 0 at 8cs-r5\[xMQ,|Y9$:29396046
DEBUG: Code 0 at 8cs-r5\[xMQ,|Y9$:213134009
Failed to open disc


Is there a procedure posted on how to find the volume Keys for Blue Ray discs for discs not located in my KEYDB.CFG (attached)?

MakeMKV shouldn't need a keydb file if you're working from the original disk, especially with AACS v43.

Is the keydb.cfg file in your MakeMKV data directory?