title: How to remove warning 'The 'configuration' element is not declared.' Visual Studio C#
body: <p>(c#) The error <code>'The 'configuration' element is not declared.'</code> comes up on my program. It shows it on line 2, which is <code>using System.Collections.Generic;</code>. The program compiles fine, and runs fine But the warning is there, and if its a problem, I want to know what it means. If it is a problem with my code, tell me what it would be (eg. variable declaration), and I can post some code. But my program is ~200 lines, so I would rather not post it here. Is this error coming up because of an error I made? or is it a bug? or is it easily fixable?</p>