How to fix blazor error " The namespace 'Razor' already contains a definition for 'Template' "

Question

After creating a new blazor component i get this error:

 The namespace 'Razor' already contains a definition for 'Template'

Is it a bug with auto generation or something? How can i fix it in blazor? It appears very often and i have no idea why. Blazor is pretty new framework, can somebody defeated this problem? Thank you in advance!

Answer 1

<PropertyGroup>
    <TargetFramework>netstandard2.1</TargetFramework>
    ...
    <RazorLangVersion>3.0</RazorLangVersion>
    <AddRazorSupportForMvc>true</AddRazorSupportForMvc>
</PropertyGroup>

Adding AddRazorSupportForMvc fixes the issue for me