What version are you seeing the problem on?

1.18.2

Describe the issue

1. Make a key, pair it to a lock
2. Make another lock, pair it to the same key.

That way if your house has multiple entrances, it can be locked with one key.

latest.log

No crash, no log.

Already in the mod, just put an empty lock with an already matched key in the locksmithing table.

Again, mind blown. Thanks for the help!