I have a server on my pc. I started it up and joined it. I played around a little bit. After a few hours of doing nothing, my game freezed. This happens quite often, so I wanted to see what was the problem. I opened the latest log. I saw that my log was spammed with errors (java.lang.NullPointerException). I have some plugins on my server (hand-made). But the error was from a minecraft source, cause it was obfuscated (for a part) and there was net.minecraft.client.Main.main(java:124). So I was just wondering why it got spammed so much.

Note: This is also happening on other servers.

This is what gets spammed all the time:

[10:27:29] [Client thread/FATAL]: Error executing task
java.util.concurrent.ExecutionException: java.lang.NullPointerException
at java.util.concurrent.FutureTask.report(FutureTask.java:122) ~[?:1.8.0_25]
at java.util.concurrent.FutureTask.get(FutureTask.java:192) ~[?:1.8.0_25]
at g.a(SourceFile:45) [1.8.8.jar:?]
at ave.av(SourceFile:881) [1.8.8.jar:?]
at ave.a(SourceFile:325) [1.8.8.jar:?]
at net.minecraft.client.main.Main.main(SourceFile:124) [1.8.8.jar:?]
Caused by: java.lang.NullPointerException
at bcy.a(SourceFile:301) ~[1.8.8.jar:?]
at fp.a(SourceFile:75) ~[1.8.8.jar:?]
at fp.a(SourceFile:16) ~[1.8.8.jar:?]
at fh$1.run(SourceFile:13) ~[1.8.8.jar:?]
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511) ~[?:1.8.0_25]
at java.util.concurrent.FutureTask.run(FutureTask.java:266) ~[?:1.8.0_25]
at g.a(SourceFile:44) ~[1.8.8.jar:?]
... 3 more