The ROS Wiki is for ROS 1. Are you using ROS 2 (Dashing/Foxy/Rolling)? Check out the ROS 2 Documentation
No troubleshooting guide exist for this stack.
Recommended starting points:
pr2_robot if you have PR2 hardware (or the PR2 user manual)
pr2_simulator if you want to run a PR2 in simulation
robot_model if you want to understand how to parse these robot description files
Wiki: pr2_common/Troubleshooting (last edited 2009-12-22 03:37:49 by EricBerger)