unnormalized quaternions in FOXY turtlebot3 sim

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I am getting this error in trying to run the Turtlebot3 simulation rviz gives a global status warning for the frame /odom. the Odom status error is message contains unormalized quaternions(squares of values don't add to 1)

command to launch:

ros2 launch turtlebot3_fake_node turtlebot3_fake_node.launch.py

running on Jetson Nano, Ubuntu 20.04, Foxy -- ros2 doctor shows no errors or warnings.

Is there a fix for this?

Thanks.