If you're in a temporary channel and you're moved out because of idling, then the channel you came from is deleted and the plugin wants to move you back, you'll get a QueryFailedException
| CRITICAL | QueryFailedException:
The Query 'clientmove clid={clid} cid={cid} cpw=' failed!
ErrorID: 768, ErrorMsg: 'invalid channelID'
Where {cid} = your not existing channel