Crashing when connecting to CoopNet

[Marizzer]

Describe the bug
Game crashes when trying to access public/private lobbies and when trying to create a CoopNet lobby

To Reproduce

1. Go to "Join"

2. Click on "Public lobbies"

3. Click "Ok" to accept the agreement

4. Game will crash

5. Open "Host"

6. Click "Host" again with the option "CoopNet"

7. Game will crash

Expected behavior
I expected the game to not crash and show the lobbies available, or host a game without the game crashing

Desktop (please complete the following information):

• Windows 11 Home Single Language 64-bit 23H2
• Google Chrome
• Super Mario 64 Coop Deluxe v1.1.1

Additional context
This has appeared after i added the game as a non-steam game to steam, i may not know if this is the reason, but that was when this crashing started.
I have already removed it as a steam game and it has not helped.