Cannot join 1.9 servers.

Put the summary of the bug you're having here
I thought that when it first crashed it was just a small error.

What actually happened was it said bug error, and I could no longer access a server fully.

1. Open up the minecraft launcher.
2. Make sure you are playing 1.9 version of Minecraft.
3. Then when you try to join a server or its games, you should crash.