Problem:
1. Apex compile failure
Apex class ChildClass: line 2, column 17: Method must use the override keyword: void ChildClass.display()
2 answers
Hi shresth ,
I think you should install it in a new playground.
I noticed that the DreamHouse package from the Admin Beginner module (04t3h0000043scG - with problem) was different that the one from Developer Beginner (04tB00000009UeX), uninstalling the package and installing the other one solved the problem.
https://trailhead.salesforce.com/ja/trailblazer-community/feed/0D54S00000DdSzVSAV
