Disconnecting from server on 1.20.6 crashes game

After upgrading my server to 1.20.6 for my friends, everytime that I log out, my entire game crashes. Here is the error code:

The game crashed whilst mouseclicked event handler
Error: java.lang.NullPointerException: mouseClicked event handler

 

I am running Fabric but there are not any issues with my mods as my friend with the same setup doesn't have the problem.