Hi,

After running through the ROS moveit setup tutorial and generating the example moveit_package, I tried to launch the demo with:

"roslaunch moveit_package demo.launch"

Which should launch gazebo and open the urdf gazebopanda.urdf located at moveitpackage/config. However, I got the error:

Error [parser.cc:488] parse as old deprecated model file failed. Error Code 4 Msg: Required attribute[filename] in element[plugin] is not specified in SDF. Error Code 8 Msg: Error reading element Error Code 8 Msg: Error reading element Error Code 8 Msg: Error reading element

To me, this implies something wrong with the gazebopanda URDF file. However, it was autogenerated by the moveit package wizard and checkurdf returns a valid tree and gives no errors. I have uninstalled and reinstalled gazebo to make sure I don't have a deprecated version, as of now I have version 11.13.0. Also, I am currently using ROS noetic.

After some googling, it doesn't look like anyone has posted about this exact situation.