“Could not find or load main class @tag” error when running my tests from IntelliJ IDE

I am trying to run my tests using a Junit configuration , in IntelliJ IDE. I am setting up the configuration and I insert my VM options , into which I am using a tag to run specific tests. When I click on the "Run" button I get the following error: ""Error:Could not find or load main class @tag" I have no clue what is wrong.Has anyone encountered the same issue?

Something I have observed is that although when entering the VM options I keep a single line for every argument, the tag expression goes into the next line after saving my configs.