Error message:

Trying to inject a value, but actually debugconfig is defined as an interface, just a type:

After replacing the interface with abstract class, the problem is solved

Class declares a value and a type. You can assign man to a variable, so class is a value. In other words, imgss is a man (type). Man plays the role of a type

Interface declares a type, but you can’t assign dogfoot to a variable, otherwise you will get an error “dogfoot” only refers to a type, but is being used as a value here`

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