Solution of => Method not found: void Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder.AddContent(int,object)

[CuteLeon]

If met this issue after publish:

blazor.webassembly.js:1 crit: 
Microsoft.AspNetCore.Components.WebAssembly.Rendering.WebAssemblyRenderer[100]
      Unhandled exception rendering component: Method not found: void Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder.AddContent(int,object)
System.MissingMethodException: Method not found: void Microsoft.AspNetCore.Components.Rendering.RenderTreeBuilder.AddContent(int,object)
   at Microsoft.AspNetCore.Components.ComponentBase.<.ctor>b__6_0(RenderTreeBuilder builder)
   at Microsoft.AspNetCore.Components.Rendering.ComponentState.RenderIntoBatch(RenderBatchBuilder , RenderFragment , Exception& )

[CuteLeon]

Root reason should be: using @ instruction to display some non-nullable value in Razor component, value would be assumed as object type, but RenderTreeBuilder just having a method like below, but non-nullable value can not match.

public void AddContent(int sequence, object? textContent)
=> AddContent(sequence, textContent?.ToString());

[CuteLeon]

Solution: Make sure you are converting non-nullable value to string manually in Razor component.