MakeMKV v1.18.3 win(x64-release) started
Using LibreDrive mode (v06.3 id=4C194CE2C4D1)
Using direct disc access mode
Loaded content hash table, will verify integrity of M2TS files.
Downloading latest HK to C:\Users\ellie/.MakeMKV ...
Saved AACS dump file as C:\Users\ellie/.MakeMKV/MKB20_v82_Speed_Racer_65B2.tgz
The volume key is unknown for this disc - video can't be decrypted
Failed to open disc
FWIW this disk has already been added to the public KEYDB.cfg file too, so if you download this file, copy it into the same directory as MakeMKV wrote your dump into, and then restart MakeMKV then it should work.