Error creating new project

I am not a professional customer.

I am running Radzen 2.56.2 on Windows 10 and just created a fresh Blazor serverside project. When I create a new empty postgres database, add a new Postgresql datasource(in Radzen) and try to run the project, I get the following errors:
Is this an issue with the latest Radzen download?

Update 1: Tried with another machine and with both MySQL, SQL server databases and I have the same errors. So I am doing something very newbiesh or there is something else going on. @enchev, @korchev would you have any inputs?

Build started...
1>------ Build started: Project: InstantTranscribe, Configuration: Debug Any CPU ------
2>------ Build started: Project: meta, Configuration: Debug Any CPU ------
2>Validating Web Site
2>
2>Validation Complete
1>C:\Temp\InstaTranscribe2\server\Pages\AddApplicationRole.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\AddApplicationUser.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\ApplicationRoles.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\ApplicationUsers.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\EditApplicationUser.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Login.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Profile.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\RegisterApplicationUser.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Unauthorized.razor.designer.cs(11,32,11,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Services\GlobalsService.cs(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Shared\LoginLayout.razor.designer.cs(10,32,10,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Shared\MainLayout.razor.designer.cs(10,32,10,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Shared\LoginLayout.razor(5,32,5,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Shared\MainLayout.razor(5,32,5,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\AddApplicationRole.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\AddApplicationUser.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\ApplicationRoles.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\ApplicationUsers.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\EditApplicationUser.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Login.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Profile.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\RegisterApplicationUser.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>C:\Temp\InstaTranscribe2\server\Pages\Unauthorized.razor(7,32,7,59): error CS0234: The type or namespace name 'InstaTranscribeDbConnection' does not exist in the namespace 'InstantTranscribe.Models' (are you missing an assembly reference?)
1>Done building project "InstantTranscribe.csproj" -- FAILED.
========== Build: 1 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

I was able to fix this issue by creating tables in my postgres database, before adding security to the application.