Restarted Jenkins from the beginning, In question 3 Despite following all steps and using the correct Jenkins pipeline script, why does the system indicate that the job definition is incorrect? Here is my pipeline script for reference:
I’m not sure why the grader doesn’t like you here. I tried the step using the solution from the tab, and it doesn’t like me either 
This suggests to me there’s a problem with the grader. I’ll create a ticket and have the lab team check this out.
So basically the grader’s gone rogue and decided to beef with both of us for no reason. 
….Anyways, I appreciate the feedback. Thanks for looking into this!
The Grader marches to the beat of jazz drummer, and is often beyond our ken. Unofficially.
Hello Sir, I appreciate your efforts to troubleshoot the issue. Unfortunately, the grader is still causing me trouble, and nothing has changed across both labs in the “Jenkins For Beginners” course. The provided solutions are still not being accepted in some of the questions, indicating that the grader issues persist. Please could these issues be fixed . Thanks for your help
An engineer is already working on the ticket; no resolution yet.
Sorry for the delay – the issue has been fixed, and the lab should work.