Can't join my server

[Samoht1]

My Paper server launched without any seeming problems in the logs. But when I try to connect on my client I get a error message I don't understand:

Please help

[sandain]

Do the logs give any more information after you try connecting? I've never seen this error, and I'm not seeing any references to it on the internet.

[Samoht1]

No it seemed to start and run just fine, no errors

[zanix]

This is the only reference to this error I have found from Google https://www.spigotmc.org/threads/cant-connect-to-new-server-return-value-of-java-util-map-get-object-is-null.569250/

From the post:

Edit2: Issue was resolved after using apt to purge all java* packages, using apt with --fix-broken install, and reinstalling default-jre, then rerunning java -jar BuildTools.jar.

[Samoht1]

I just reinstalled the server and now it works just fine.

[zanix]

Glad it's working, once again proving this solution works https://youtu.be/nn2FB1P_Mn8?t=11