Error start stil simulation

Hi ,

i enter this command but i have error message shown below,

what can be problem, i am new gazebo, ros and ardupilot

thank you for your support

…/Tools/autotest/ -f gazebo-iris --console --map

Traceback (most recent call last):
File “…/Tools/autotest/”, line 796, in
frame_infos = options_for_frame(cmd_opts.frame, cmd_opts.vehicle, cmd_opts)
File “…/Tools/autotest/”, line 506, in options_for_frame
ret = _options_for_frame[p]
KeyError: ‘gazebo’
SIM_VEHICLE: Killing tasks


Have you managed to solve this problem?