Unable To Make My Test Run

I wrote a test to test my serialization but when I try to to run it, it fails to run. Can some TA take a look at my code and guide me towards a solution?

We will need your code here in order to help you… Can you please do the same? may be put some snippets here, we will ask for more specific details if that is not enough.

This is my code:

This is the log output:

Its an issue with your build.gradle. Your build is somehow triggering Junit4, and hence the error. Please use the build,gradle I have shared on a slack channel.

Closing this topic as your issue is resolved by the mentor. If it is still not resolved, Kindly un-mark the accepted solution or create a new topic and post this question as a reference link in the description of the new topic.