Blazor - Blazorex Error - Client.dll missing

I have the default Blazor WebApp. .NET9, Auto Rendering with Global.I've added the nuget package for Blazorex to the client side.

When I build I get the error:

Metadata file

'C:\xxxx\xxxx\source\repos\xxxx\xxxxx\xxxxx.Client\obj\Debug\net9.0\ref\xxxxx.Client.dll'could not be found

I've included:

@using Blazorex

In the client _Imports.razor file

Code on the razor page is as follows:

@page "/Blazorex"@using global::Blazorex<Canvas Width="800" Height="600"         OnFrameReady="(t) => OnFrameReady(t)"        OnCanvasReady="(ctx) => OnCanvasReady(ctx)" />@code {    CanvasBase _canvas;    private void OnCanvasReady(CanvasBase canvas)    {        _canvas = canvas;    }    private void OnFrameReady(float timeStamp)    {        // your render logic goes here    }}

Naturally tried restarting everything.If I remove all traces of Blazorex it runs fine.

Does anybody know why I get the .dll missing error?