If you cancel connecting to a server that is on minecraft version 1.15.2 or older and then try to load into a single player world you are met with the 'Bad Datapack error' as shown in the screen shot. Clicking the safe mode button does nothing.

I've attached the stack trace below in the stacktrace.txt file
stacktrace.txt

Steps to reproduce:

1. Set connect version to 1.15.2 or lower
2. Click the cancel button before you finish connecting to the server
3. Load a singleplayer world

Notes:
Issue persists until you

1. Restart the client
2. Let the game actually finish connecting to a server

Has this been resolved as of the latest version of multiconnect, 1.3.30?

Probably resolved, due to a lack of anyone responding.