[Bug] Error: Unknown model 'iris' ERROR [px4] Startup script returned with return value: 256

[zhutong66]

Describe the bug

I encountered this problem when compiling using the code make px4_sitl_default gazebo

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px4 starting.

INFO [px4] Calling startup script: /bin/sh etc/init.d-posix/rcS 0
Error: Unknown model 'iris'
ERROR [px4] Startup script returned with return value: 256

To Reproduce

No response

Expected behavior

No response

Screenshot / Media

No response

Flight Log

No response

Software Version

No response

Flight controller

PX41.11

Vehicle type

None

How are the different components wired up (including port information)

No response

Additional context

No response

[NearDuckyu]

Have you tried to use Tools/setup_gazebo.bash?
It may help recognizing the iris model.