Hill, i have an error, that doesn't allow me to enter to the server .
It tested different versions of the plugin and it says the same error.
I tested to host on my pc (Windows) but i also created a VM of Ubuntu server and the problem remains.

I just read (#674) but my server its in online-mode=true (i also tested to make from 0 the server.propierties) But nothing.

I don't know where is the problem.
I am using SportPaper for 1.8.8.

https://pastebin.com/f3yyUqn8

Any idea that where it can be the error?
The last thing that i done is to connect it an mysql server....

Ty.