Plastic SCM not working

Not sure if this is the place to post this. Correct me if there a better place.

After Migrating with plastic SCM i cant seem to check the incoming changes. As soon as I click incoming messages I get an error like this :

NullReferenceException: Object reference not set to an instance of an object
Unity.PlasticSCM.Editor.Views.IncomingChanges.Developer.IncomingChangesTreeView.Sort () (at Library/PackageCache/com.unity.collab-proxy@1.15.15/Editor/PlasticSCM/Views/IncomingChanges/Developer/IncomingChangesTreeView.cs:184)

anyone else getting this error. I cant progress with my team without fixing it. Ive attached the error that pops up in unity as well as the code it shows me when I click on the error.