[Turtlebot4 Lite] Issue in launching TB in gazebo

[Raoui]

Hello,
I work with a Turtlebot4 Lite (ROS2 Humble).
When I want to launch a simulation, for example with TB3 or TB4, the robot doesn’t appear in the gazebo. I get this issue:

This happens, when I am not connected to the raspberry robot .

Same thing when launching create3 simulator:

[Sohail]

Can you please share the command so that I can verify it