Simulation problems

[gmptrr98]

I followed step by step the simulator setup. When running the start command
ros2 launch irobot_create_gazebo_bringup create3_gazebo.launch.py
Rviz and Gazebo opens but no model of the robot can be seen in both of them.
Rviz says gives a warning in the Global status:
Fixed Frame No tf data. Actual error: Frame [odom] does not exist
While looking at the terminal, the last thing written there is:

[spawner-9] [INFO] [1661204111.217594080] [spawner_joint_state_broadcaster]: Waiting for '/controller_manager' node to exist [spawner-9] [ERROR] [1661204113.233975616] [spawner_joint_state_broadcaster]: Controller manager not available

What kind of problem is this and how could I resolve this?
Thank for the help