I need help 'cause when i press prepare carefully button IT TELLS ME THAT THERE WAS AN ERROR AND CANT BE OPENED THE ERROR IS ANNOYING

[Prepare carefully] failed to classify a FactionDef as humanlike or not:LTS_courier

And

Exception filling window for Rimwold.Page_ConfigureStartingPawns: EdB.PrepareCarefully.InitializationExeption:Prepare Carefully failed to initialize ---> Sistem.NullReferenceException: Object reference not set to an instance of

HELP PLEASE IM ANNOYED