Cannot setup forge 1.14.4 for IntelliJ

[Cerandior]

Hello everyone. I decided to give the new minecraft versions a go, but for some reason, I am not able to get the workspace to work.

I opened the build.gradle file as a project in IntelliJ (As the instructions say you must do) and I let the process finish: https://imgur.com/a/3Pinslq

I then run the "genIntelliJRuns" command and the run config completed successfully because they are imported in the IDE.
However they have a little red "x" on their icon, and they don't work at all, displaying this error: https://imgur.com/35qZLxo

Can someone help me, because I do not know what have I done wrong. I think I followed all the instructions provided in the README file.
Thank you in advance.

[F43nd1r]

Click on "Edit Configurations" -> Select your configuration -> "Use classpath of module" -> Select your module.

 

I think this was mentioned somewhere in the docs, but I can't find it right now.

[Cerandior]

I did that right before you answered. It got rid of the little "x" icons in the run command, however I still cannot run the game (gives the same error: https://imgur.com/35qZLxo). And there are a lot of errors in the example mod file as well (https://imgur.com/a/3Pinslq zoom into the first image).

 

The project has not been built correctly for some reason. It took 7-8 minutes for it to finish when I opened it for the first time, and that seemed a reasonable time to me. And there were no errors displayed during the build phase as well, so I am not sure what's going on.

I tried other forge versions (1.14 versions), but the same thing happens.
Do you think it has something to do with the jdk? I downloaded the latest version which was 1.12 (I think), but that was not supported by gradle. So I let the thing run using the old jdk version that was installed in my computer (1.8)
Do I need a more recent version of jdk?

Edited July 23, 2019 by Cerandior

[Cerandior]

Resolved by using another version of jdk.
Apparently the jdk 8.0.221 doesn't work with gradle.