Crashing

I try to join a server but it fails to and crashes.

When it happened the first time I was only hoping to join my favourite minecraft server and have some fun with no problems at all.

What actually happened was that once I joined the server I had only been able to stay in the server for only a couple of seconds because of continuous crashing (on every server, this also rarely happens on single player). Before 1.11.2 came out it was easier to stop since I had to continuously re-join. To try and minimise the problem, I deleted some documents but it didn't help me.

Steps to Reproduce:
Unfortunately I do not know how to re-cause the problem since it happens out of nowhere but all I know is that it happens on java version (I think anyways).

Thank you very much!