Docker - Crafty

Hello.

I’ve setup Crafty in CasaOS trough App Store and when I wanted to start some plugin that needs folder to be created, it wouldn’t start. For example dynmap says:

´´[dynmap] ERROR creatomg default for plugins/dynmap/configuration.txt´´

It just cant create the folder.

Any ideas would be appreciated. (Note please, that I’m new to docker and CasaOS.)