Issue
After some code modifications, I suddenly noticed the project icon has a small red cross icon. However, no other file/package/folder is showing this icon. I am not sure where the error is and how to solve it.
Solution
Usually it means that there's a path error, eg. one jar referenced in the project cannot be found.
Use the 'problems' view to get more details
Answered By - Guillaume
Answer Checked By - Candace Johnson (JavaFixing Volunteer)