Return an empty JSON hash instead of the request JSON. This fixes an incompatibility with newer versions of Pusher

Author: mpociot

src/API/TriggerEvent.php

@@ -60,6 +60,6 @@ public function __invoke(Request $request)
             ]);
         }
 
-        return $request->json()->all();
+        return (object)[];
     }
 }