Unknown Java Illegal Exception Crash (1.8.8)

Server crashes due to unknown Java Illegal Exception upon startup
[log & crash report] https://pastebin.com/X4zYdUWc
[information] https://pastebin.com/LHu4Z9sE

Hello, I am new to running a minecraft server and I noticed my minecraft server is unable to start due to a Java Illegal Exception. I don’t know what this means, I would like to know why it crashes, and a solution to prevent this from happening again.

At the time of this issue, it runs on Minecraft Java 1.8.8 PaperMC. I noticed it after switching “online-mode” to true in “server,properties” The server was offline before I edited the files. I use Sparked Host to host my server. I looked up topics similar to this but I couldn’t find any ones that match. I found a fix somewhere that wanted a user to delete the user cache file, but that did not fix this problem.

Here is a list of the plugins I use:


All other info is in the Pastebin file

Why are you using 1.8?

1 Like

Server only has 512 megabytes of RAM.

Most probably your world, entities or such is corrupt. The error is about NBTs. Maybe try on a fresh server.

I will, thanks for your help!