Issue with CB130j labwork code in Eclipse

I have the Couchbase server (6.0) set up , bucket created, document added. I imported the sample project code into the Eclipse IDE for Java Developers (Version: 2019-03 (4.11.0)) but the code is showing many errors all regarding the @override entry. Here is the error:
“The method create(T, Class<? extends T>) of type CouchbaseRepository must override a superclass method||/lab-03/src/main/java/com/couchbase/customer360/data|line 66|Java Problem|”
I’m not able to complete the lab and “Run the final application and preview its behavior”
any help would be greatly appreciated. This is very new for me and I’m stuck in lab 2.