Dont throw exception on goal_handle rejected

rosbridge_library/src/rosbridge_library/internal/actions.py

@@ -127,10 +127,9 @@ def get_result_cb(self, future: Future) -> None:
 
     def goal_response_cb(self, future: Future) -> None:
         self.goal_handle = future.result()
-        if not self.goal_handle.accepted:
-            raise Exception("Action goal was rejected")
-        result_future = self.goal_handle.get_result_async()
-        result_future.add_done_callback(self.get_result_cb)
+        if self.goal_handle.accepted:
+            result_future = self.goal_handle.get_result_async()
+            result_future.add_done_callback(self.get_result_cb)
 
     def start_goal(self, goal_msg):
         if not self.client.action_client.wait_for_server(timeout_sec=10.0):
@@ -172,4 +171,4 @@ def start_goal(self, goal_msg):
         else:
             raise Exception(status)
 
-        return json_response
+        return json_response