Quickapp template dotnet5 angular 11 template for VS2019

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C#

I created a vs2019 project using the quickapp template (dotnet core 5.0 with Angular front-end). The app worked from the startup, however, it used AddInMemory from IdentityServer 4.0 features. The author had indicate that it can be removed and store in MSsql database.

I did remove the code per IdentityServer website suggested but the app is no longer working. I got 'Invalid_Client' when I tried to login. You can see my code in my github.

Here is my link to the code GitHub - d052057/quickapptest: test app for quickapp template[^]

Please help!
Thank you.

What I have tried:

please see my code.GitHub - d052057/quickapptest: test app for quickapp template[^]