I followed the Blazor Server instructions and got my code running. Nothing was working on the dashboard on Demo20 so I moved all javascript imports from the body tag in the HTML to the "OnAfterRenderAsync" on the MainLayout.razor file (as indicated on the blazor guide).

I still got the following error when importing the datatables.bundle.js file:
await jsRuntime.InvokeAsync<IJSObjectReference>("import", NavigationManager.ToAbsoluteUri("assets/plugins/custom/datatables/datatables.bundle.js"));

Error: Microsoft.JSInterop.JSException: undefined has no properties
@https://localhost:7299/assets/plugins/custom/datatables/datatables.bundle.js:12:1237627

at Microsoft.JSInterop.JSRuntime.InvokeAsync[TValue](Int64 targetInstanceId, String identifier, Object[] args)
at WebApp.Shared.MainLayout.OnAfterRenderAsync(Boolean firstRender) in

Attached an image of how my html code looks (_Layout.cshtml), the MainLayout.razor file and the error.

https://drive.google.com/drive/folders/1X5s7lo2C4adP-e4wSGQGy3GdQbAAQDkT?usp=sharing


I used gulp to build the assets. Let me know if you need any other information.