Configuration file is corrupt (or not exists), creating new oneNot An Issue
Red font appears:

[Instant Craft] Configuration file is corrupt(or not exists),creating new one 

I have another plugin that seems to conflict with it.   https://umod.org/plugins/magazin-booster#documentation  
installation(instant craft) Another plugin will fail
Please use English when posting for help as well as responding as this is an English-supported community.

As far as your issue goes, that error (the red text) means your configuration file is invalid/wrong and needs to be fixed.
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