If i log in in server minecraft has crashed

Put the summary of the bug you're having here when i log in in server minecraft has crsched

What I expected to happen was...: i thing i play in this server
Describe what you thought should happen here

What actually happened was...:
Describe what happened here ilog in in server and minecraft has crasched

Steps to Reproduce:
1. Put a step by step guide on how to trigger the bug here
2. ...i go to server
3. ...i log in in server
4. minecraft has crasched