crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Arg_NoDefCTor, Wasm.Shared.MainLayout
System.MissingMethodException: Arg_NoDefCTor, Wasm.Shared.MainLayout
   at System.RuntimeType.CreateInstanceMono(Boolean , Boolean )
   at System.RuntimeType.CreateInstanceDefaultCtor(Boolean , Boolean )
   at System.Activator.CreateInstance(Type , Boolean , Boolean )
   at System.Activator.CreateInstance(Type , Boolean )
   at System.Activator.CreateInstance(Type )
   at Microsoft.AspNetCore.Components.DefaultComponentActivator.CreateInstance(Type )
   at Microsoft.AspNetCore.Components.ComponentFactory.InstantiateComponent(IServiceProvider , Type )
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateComponent(Type )
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.InstantiateChildComponentOnFrame(RenderTreeFrame& , Int32 )
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewComponentFrame(DiffContext& , Int32 )
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InitializeNewSubtree(DiffContext& , Int32 )
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.InsertNewFrame(DiffContext& , Int32 )
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.AppendDiffEntriesForRange(DiffContext& , Int32 , Int32 , Int32 , Int32 )
   at Microsoft.AspNetCore.Components.RenderTree.RenderTreeDiffBuilder.ComputeDiff(Renderer , RenderBatchBuilder , Int32 , ArrayRange`1 , ArrayRange`1 )
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder , RenderFragment , Exception& )
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.RenderInExistingBatch(RenderQueueEntry )
   at Microsoft.AspNetCore.Components.RenderTree.Renderer.ProcessRenderQueue() blazor.webassembly.js:1:38555

<Router AppAssembly="@typeof(App).Assembly">
    <Found Context="routeData">
        <RouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)" />
        <FocusOnNavigate RouteData="@routeData" Selector="h1" />
    </Found>
    <NotFound>
        <PageTitle>Not found</PageTitle>
        <LayoutView Layout="@typeof(MainLayout)">
            <p role="alert">Sorry, there's nothing at this address.</p>
        </LayoutView>
    </NotFound>
</Router>

 <CascadingAuthenticationState>
      <Router AppAssembly="typeof(App).Assembly"  PreferExactMatches="true">
          <Found Context="routeData">
          <AuthorizeRouteView RouteData="@routeData" DefaultLayout="@typeof(MainLayout)">
                    <Authorizing>
                        <FocusOnNavigate RouteData="@routeData" Selector="h1"/>
                    </Authorizing>
                    <NotAuthorized>

                      @*  <RedirectToLogin/>*@


                    </NotAuthorized>
                </AuthorizeRouteView>
            </Found>
            <NotFound>
                <LayoutView Layout="@typeof(MainLayout)">
                      <span>Error</span>
                 </LayoutView>
            </NotFound>
        </Router>
    </CascadingAuthenticationState>

<CascadingValue Value="this" IsFixed="true">
  main
</CascadingValue>

@implements IHandleEvent
@code {
        Task IHandleEvent.HandleEventAsync(EventCallbackWorkItem callback, object? arg) => callback.InvokeAsync(arg);
}

 report.DataSources.Add(new ReportDataSource("Header", "از نوع لیست باشد"));

[HttpGet]
[Route("GetImagess")]
public async Task<ActionResult> GetImagess ()
{  
 var rootPath = _webHostEnverioment.WebRootFileProvider.GetDirectoryContents("/_content/CommonComponents").FirstOrDefault(x => x.Name == "lib").PhysicalPath;
....
}

blazor.webassembly.js:1 crit: Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.
System.FormatException: The input is not a valid Base-64 string as it contains a non-base 64 character, more than two padding characters, or an illegal character among the padding characters.
   at System.Convert.FromBase64CharPtr(Char* inputPtr, Int32 inputLength)
   at System.Convert.FromBase64String(String s)