are you sure it crashes? (The terminal command only works if BTT is not running). Could you post the crashlog from macOS Console.app's Crash Report section?
Are you using the version from my website or are you using it via a Setapp-Subscription? (there the command would be different)
Very weird, it seems to crash without mentioning a direct BTT code path, possibly some weird window state has been persisted by the system. I'd try to reset the preferences (this will not delete your triggers but settings like "launch on startup" etc. might need to be set again)