Sequence contains more than one matching element<br /><br /> at System.Linq.ThrowHelper.ThrowMoreThanOneMatchException()
at System.Linq.Enumerable.TryGetSingle[TSource](IEnumerable`1 source, Func`2 predicate, Boolean& found)
at BlazorBlogApi.Controllers.WpCommentController.UpdateCommentTreeAdditionData(TreeData`1 rootTree) in C:\Mutou\work\BlazorProjects\BlazorBlog\BlazorBlogApi\BlazorBlogApi\Controllers\WpCommentController.cs:line 426
at BlazorBlogApi.Controllers.WpCommentController.UpdateCommentTreeAdditionData(TreeData`1[] datas) in C:\Mutou\work\BlazorProjects\BlazorBlog\BlazorBlogApi\BlazorBlogApi\Controllers\WpCommentController.cs:line 403
at BlazorBlogApi.Controllers.WpCommentController.GetWpCommentItem() in C:\Mutou\work\BlazorProjects\BlazorBlog\BlazorBlogApi\BlazorBlogApi\Controllers\WpCommentController.cs:line 66
at lambda_method470(Closure, Object)
at Microsoft.AspNetCore.Mvc.Infrastructure.ActionMethodExecutor.AwaitableObjectResultExecutor.Execute(ActionContext actionContext, IActionResultTypeMapper mapper, ObjectMethodExecutor executor, Object controller, Object[] arguments)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeActionMethodAsync>g__Awaited|12_0(ControllerActionInvoker invoker, ValueTask`1 actionResultValueTask)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.<InvokeNextActionFilterAsync>g__Awaited|10_0(ControllerActionInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Rethrow(ActionExecutedContextSealed context)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted)
at Microsoft.AspNetCore.Mvc.Infrastructure.ControllerActionInvoker.InvokeInnerFilterAsync()
--- End of stack trace from previous location ---
at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeNextExceptionFilterAsync>g__Awaited|26_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)