It happened that an IDE specific file or folder is tracked and push to remote repository without intention.
1. To remove an IDE specific track file or directory. First change directory to the path where the file or directory is located.
Then run the following command:
git rm --cached FILENAME
or
git rm -r --cached FOLDERNAME/
2. Add the FOLDERNAME/ or FILENAME within .gitignore.
3. Stage all files. git add .
4. Commit git commit -m "Remove IDE specific files".
5. Then do a git push to if you want to reflect the changes in remote repository.