ASP.NET Custom Control - Unknown server tag

Question

I\'ve made a custom control that inherits from a Literal control. When I try and use my control on a page a parsing error is thrown. I\'ve added this to my web.config

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Answer 1

In my case the application was running in local mode, when publishing got the same error from user control tag.

Upon commenting the user control tag, noticed a path error in another place. Upon fixing the other issue and uncommenting the user control tag, it worked. Seems error displayed is un related.