For windows 10 C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.1.1\lib\junit-4.12.jar C:\Program Files\JetBrains\IntelliJ IDEA Community Edition 2020.1.1\lib\hamcrest-core-1.3.jar
@@eviprisilia9795 mvnrepository.com/artifact/org.hamcrest/hamcrest-core/1.3 Download the .jar file at this link, manually add it to the lib folder he was talking about, and then follow the rest of his steps. Hope this helps