Gazebo simulation issue

Hi everyone, I am new in using PX4 on jetson tx2 board. I follow the tutorial in using gazebo for simulation. When I execute ‘make px4_sitl gazebo’. The gazebo runs properly, but I cannot successfully run the command like “commander takeoff” in the terminal. What could be the issue? Appreciate your help in advance.

my terminal display these few lines in last:

  • SYS_AUTOCONFIG: curr: 1 -> new: 0
    INFO [dataman] Unknown restart, data manager file ‘./dataman’ size is 11798680 bytes
    INFO [simulator] Waiting for simulator to accept connection on TCP port 4560
    Gazebo multi-robot simulator, version 9.0.0
    Copyright © 2012 Open Source Robotics Foundation.
    Released under the Apache 2 License.

[Msg] Waiting for master.
[Msg] Connected to gazebo master @
[Msg] Publicized address:
[Wrn] [] Queue limit reached for topic /gazebo/default/user_camera/pose, deleting message. This warning is printed only once.