Cannot run the website deployed by Visual Studio - GET http://localhost:8080/_configuration/MyApp 404? - asp.net

Question

I created a new ASP.NET Core Web application in Visual Studio 2019 (.Net Core 3.1, Angular, with authentication of "Individual User Accounts/Store user accounts in-app").
Then I published the application to folder ...\bin\Release\netcoreapp3.1\publish\.
Then I try to test the deployed website
Run MyApp.exe in ...\bin\Release\netcoreapp3.1\publish\.
PS C:\Users\.....\bin\Release\netcoreapp3.1\publish> .\MyApp.exe
info: IdentityServer4.Startup[0]
Starting IdentityServer4 version 3.0.0.0
info: IdentityServer4.Startup[0]
Using explicitly configured authentication scheme Identity.Application for IdentityServer
info: Microsoft.Hosting.Lifetime[0]
Now listening on: http://localhost:5000
info: Microsoft.Hosting.Lifetime[0]
Now listening on: https://localhost:5001
info: Microsoft.Hosting.Lifetime[0]
Application started. Press Ctrl+C to shut down.
info: Microsoft.Hosting.Lifetime[0]
Hosting environment: Production
info: Microsoft.Hosting.Lifetime[0]
Content root path: C:\Users\wfaaf\source\repos\MyApp2\MyApp\bin\Release\netcoreapp3.1\publish
copy and host \bin\Release\netcoreapp3.1\publish\ClientApp\dist\ in IIS.
The web page shows in Browser. However, the console shows errors?
polyfills-es2015.0ef207fb7b4761464817.js:1 GET http://localhost:8080/_configuration/MyApp 404 (Not Found)
polyfills-es2015.0ef207fb7b4761464817.js:1 GET http://localhost:8080/_configuration/MyApp 404 (Not Found)
main-es2015.faf629d7395bba656bc6.js:1 ERROR Error: Uncaught (in promise): Error: Could not load settings for 'MyApp'
main-es2015.faf629d7395bba656bc6.js:1 ERROR Error: Could not load settings for 'MyApp'
main-es2015.faf629d7395bba656bc6.js:1 ERROR Error: Could not load settings for 'MyApp'
The host of http://localhost:8080/_configuration/MyApp should be the https://localhost:5001. How to set it?