It looks like the problem comes from the control itself. The value of the CodeBehind or Inherit attribute is not correct and it does not reflect to the class definition in the code behind.
Basically the Inherits attribute is construct based on the control location
If the file is located in folder called CustomControl then the attribute will looks like Inherits="CustomControls
_NameOfTheControl" and in the code behind you will have
public partial class CustomControls
In your case the value of the Inherits attribute is Inherits="Controls_
CateringStep1" and the control is located under /UserControls/Spudbar/
. So make sure that all attributes have the proper values and the class definition is the same as this one for Inherits
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