[BUG] "something went wrong while executing that command, please report it to your server owners"

[tripya-ai]

What is the bug?

I have no clue what is happening, but when I try /teama reload it says the error message above, what it sends in console is:
[22:51:55 ERROR]: Something went wrong while executing the command, please report this https://github.com/booksaw/BetterTeams/issues/new/choose
I have also noticed that players can't leave their teams..

Expected Behaviour

Reload the config successfully..

How to Reproduce

1. Run command: /teama reload
2. I don't know what else.

Error message

I said it already

Output of /teama version

Storage Method:
com.booksaw.betterTeams.team.storage.storageManager.SeparatedYamlStorageManager
Minecraft Version: 1.21.1-132-b48403b (MC: 1.21.1)
Language Selected: messages
Online mode: false
Player count: 4
Current plugin version: 4.10.0

Additional Information

None

[booksaw]

What is the full stack trace, there should be another ~20 lines to it