[BUG] Shop saved config throws an Exception

[Ste3et]

Is there an existing issue for this?

• I have searched the existing issues

Type of bug

Error in console

Environment

- Server Version: Paper 1.21.1 4430e96
- Shop Version: Shop-1.9.1.2

Server startup log

https://mclo.gs/6yzKL0W#L1521

Shop config files

https://mclo.gs/GNXpEbk

Error log (if applicable)

https://mclo.gs/P8lyvbL

Bug description

The bug is present since upgrading to 1.9.1.2 but i can't report it in the last days, the online yaml parser works without errors and say the f0468e3b-8391-4d7a-a017-f1d422853f2a.yml don't have errors but the Shop Plugin throws an ecxeption anyways

Steps to reproduce

Start The Server and the Shop Plugin throws the error on Startup

Expected behaviour

The Server should start without errors

Actual behaviour

The Startup and loading of the Shop Informations throws an error

Other information

No response