Topic category: Bugs and solutions
So I made a mod on MCreator 1.8.1 and then updated MCreator to MCreator 1.9.0 and imported my mod to the new version, and I didn't really notice this at first, but every time MCreator would do the build task, it would fail. You can see the error in the first screenshot. The second error is pretty much the same, except it is when I try to run a test environment. I tried to download the .jar file to run the game that way but it has the same error as the two above.