💡IntelliJ Debugger can't run? AB3 Project seems broken on intellij? Setup your project properly

[EugeneTeu]

Lesson learnt in reading your documentation:
https://nus-cs2103-ay1920s1.github.io/addressbook-level3/SettingUp.html

From section 2
To get ur debugger/Intellij to run properly, remember to import the project by clicking
import project -> selecting your build.gradle file.
Your intellij should import the entire project correctly and everything should work.

PS: spent an hour trying to figure out why my Intellij was not running properly and even reinstalled my jdk ._.