Pixhwak HIL mode doesn't connect to gazebo iris

Hello everyone, I am trying to connect gazebo iris drone with ardupilot pixhawk6c in hil mode by mavproxy. When I connected my pixhawk from mavproxy, it’s okay but about gazebo there is issue for connecting. At the end, everything looks okay however my mavros commands are not sent to gazebo. Gazebo iris drone doesnt arm or takeoff. Please, Could you help me to connect pixhawk instead of SITL to gazebo.