I can't open multiplayer without it crashing

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I could play multiplayer without it crashing
What actually happened was...:
Describe what happened here
The whole game crashed and I couldn't play on servers
Steps to Reproduce:
1. Open multiplayer
2. ... Open a server
3. ... wait 3 seconds and it crashes