Dev builds generates empty config.yml and other .yml files

So I just upgraded my account to download the 1.12 MythicMobs builds and I tried almost all versions but none of them were able to load the configs with anything in it. The console doesn't throw any errors and it says it loaded the config files.



This is the case with every file. And I'm not the only one:



The 1.11 builds work just fine.