OnUnhandledLiteralAn unhandled literal server message has been received
|An unhandled/unrecognized literal server message has been received.
The KVIrc core code hasn't been able to recognize it nor handle it in any way.
If you call halt you will stop the standard or warning message output.
For server numerics there is no "unhandled" event, you should use the raw numeric events to handle them.