I have downloaded the Microsoft.AspNetCore.Blazor.DevServer to 3.0.0-preview9.19465.2 and downloaded the Microsoft.AspNetCore.Blazor.HttpClient to 3.0.0-preview9.19465.2

Updated the packages that has to be updated both on the client and server. Then removed the unnecessary things. Then built my solution. I can build successfully, but when I run the project I get stuck on the Loading... and in my inspector I get this error:

```
 System.InvalidOperationException: Object of type 'Microsoft.AspNetCore.Components.Routing.Router' does not have a property matching the name 'ChildContent'.

```

How do I fix this? Thank you.