Error during application startup

I have a project that runs both in Visual Studio and in Blazor Studio, however whenever I try to view various pages, Blazor Studio will not display the page and allow me to make changes because it says "Application will not Build" in the output all I get is the vague message "Error during application startup"

Again, it runs in VS and it runs in Blazor Studio. It just won't build to allow me to manipulate the pages.

Some service cannot be started in the designer. Check this article for details on how to wrap such code using #RADZEN preprocessor:

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