In this one : Get Started | Free UI Components by Radzen
On step 5: If you are using client-side WebAssembly Blazor also add the following code to your .csproj file (after the closing RazorLangVersion element):
<BlazorLinkOnBuild>false</BlazorLinkOnBuild>
As this no longer works, it should be
<BlazorWebAssemblyEnableLinking>false</BlazorWebAssemblyEnableLinking>