NullPointerException when trying to save

[lambor590]

Describe the bug
Every time the mod tries to save, I get an error.
I don't know if it can cause some consequences.

To Reproduce
Steps to reproduce the behavior:

1. Wait the mod to save, stop the server or do something to trigger a save, like when a player disconnects.

Screenshot of the log (after a player left the server)

Versions:

• Minecraft: 1.12.2

• Mod Version: 2.1.8

• Forge Forge 14.23.5.2860

• Also, I'm using the hybrid server software called Mohist.

[The-Fireplace]

Is that the full error that was logged?

[lambor590]

Is that the full error that was logged?

Yes.

I think it happens on a specific circumstance or when a player did a specific action. Today I restarted the server 3 times, and didn't saw this error throughout the day. And I did not remove any mod or nothing, but yesterday I configured some plugins, maybe a plugin was causing it.

It doesn't happen every time a player leaves or I stop the server, just sometimes.
One thing I know is that it happens this error since I was making the server, so I was the only player in the server when I saw this error for the first time, and no clan existed or exists in this moment yet.

If I see it again I will tell you here.
If in 1 week I don't see it again I'll close this issue.

[lambor590]

So, now I was testing a new plugin, and when I stopped the server, it showed the error.
I'm the only player that logged in to the server.