Steps to reproduce:

1. Create a Blazor application;

2. Add Teleri.Reporting NuGet package;

3. Add Telerik.WebReportDesigner.Services Nuget package -> some of the app dependencies are broken.

Solution:

Refer the .NET Standard DLLs from C:\Program Files (x86)\Progress\Telerik Reporting <Version>\Bin\netstandard2.0.