i can't play any multyplayer servers

Put the summary of the bug you're having here

What I expected to happen was...:
Describe what you thought should happen here
I tried to play a multyplayer server

What actually happened was...:
Describe what happened here
An error says that I can't play and logged me out.

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. I logged in
3. I went to the server menu
4. tried to play a server
5. minecraft logged out