fix:var name

@@ -25,7 +25,7 @@ class Dispatcher implements CallbackInterface
                 if (!$agent instanceof AgentInterface) {
                 if (!$agent instanceof AgentInterface) {
                     continue;
                     continue;
                 }
                 }
-                if ($agent->dsiabled()) {
+                if ($agent->disabled()) {
                     continue;
                     continue;
                 }
                 }
                 try {
                 try {