优化了运行。在运行状态下，在画布上添加触发器、移除触发器、或者涉及到触发器的操作都会及时/延时生效（已经在等待信号的触发器，将会在触发信号后才会拿取新的信号类型创建触发任务）

Library/Web/Router.cs

@@ -399,10 +399,18 @@ namespace Serein.Library.Web
                 catch (Exception ex)
                 {
                     // If serialization fails, use the original message's string representation
-                    resultData = ex.ToString();
-                    byte[] buffer = Encoding.UTF8.GetBytes(resultData);
-                    response.ContentLength64 = buffer.Length;
-                    response.OutputStream.Write(buffer, 0, buffer.Length);
+                    try
+                    {
+                        resultData = ex.ToString();
+                        byte[] buffer = Encoding.UTF8.GetBytes(resultData);
+                        response.ContentLength64 = buffer.Length;
+                        response.OutputStream.Write(buffer, 0, buffer.Length);
+                    }
+                    catch (Exception ex1)
+                    {
+
+                        Console.WriteLine(ex1);
+                    }
                 }