"Failed to process question pool" in custom DB configurations

[LakeYS]

Non-critical, the bot will continue as normal upon retrying after the error.

Repro:

1. Start the bot using the sample file DB unmodified.
2. Start a game in the Science category.
3. Stop before the round ends.
4. Start another game in the Science category.
5. Stop before the round ends.
6. Start an advanced game: trivia play advanced 3 science 1 1 h and note the error.

After further testing, it has been determined that this is present in 1.6.5