Duplicate class found error in Java

[supremvanam]

Hi, I'm trying to add a solution to one of the questions on Neetcode 150. But when I fork the repo, clone it, and open the folder in IntelliJ IDEA it says that Duplicate class found in the file '/NeetCode/ds-algo/java/279-Perfect-Squares.java'

The IDE is complaining about the class "Solution" which is same for every file in the project. How can I fix this? Please find the attached screenshot.