StackOverflowError while Saving Characters

[Chiloven945]

Describe the bug

A StackOverflowError occurs whenever characters are saved to .dat files. Because of this error, the save process fails and character data is not written correctly. As a result, newly created or updated characters are lost after the server restarts.

To Reproduce

1. Create a new character.
2. Run the command:

   /character save <name>
   

3. Check the server console/log output.
4. Notice that the save operation triggers a StackOverflowError and does not complete.

Expected behaviour

• Characters should save successfully without errors.
• The .dat file should properly store the character data.
• Characters should persist and remain available after a server restart.

Screenshots / Videos

No response

Error log (if applicable)

https://gist.github.com/Chiloven945/573de269337d30933fe3988385a7c94d

Characters Version

0.7.1

Server version

[08:51:57 INFO]: This server is running Paper version 1.21.11-101-main@57c7aac (2026-02-03T18:04:26Z) (Implementing API version 1.21.11-R0.1-SNAPSHOT)
You are running the latest version
Previous version: 1.21.6-48-4d854e6 (MC: 1.21.6)

Checklist

• I am using the newest build from hangar and the issue still persists.
• I have searched the issue tracker for similar issues but couldn't find anything.

Anything else?

No response