Common Compile/Runtime Errors in ASP.NET MVC

Question

What are some common errors that programmers face in ASP.NET MVC when compiling or running their application?

Example

• The incoming request does not match any route

Please include the solution with the error, or if there isn't one set solution, what developers should look for when encountering these errors.

Answer 1

• When the view doesn't exist: The resource cannot be found

Answer 2

• Parser error: Could not load type [...]
• web.config in Views folder did not get included in publish