C# : ASP.NET Core Dependency Injection error: Unable to resolve service for type while attempting to

C# : ASP.NET Core Dependency Injection error: Unable to resolve service for type while attempting to activate
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I have a hidden feature that I promised to tell you about.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

A brief introduction of myself,
Hey, I'm known as Delphi.
I can be of service in providing you with answers to your inquiries.
C# : ASP.NET Core Dependency Injection error: Unable to resolve service for type while attempting to activate
I encourage you to reach out through comments or chat if you have more specific questions.
Don't hesitate to provide your answer or insights by leaving a comment below.
A 'heart' from me will be given as a sign of appreciation for your answer.
type for service resolve to error: to activate C# : attempting ASP.NET while Core Injection Unable Dependency