Hey,

I have posted the same question in the Gazebo forum aswell but maybe somone here knows the awnser.

'All files can be found in this repository: https://github.com/ApflaBua/ur5_gripper

I think I know why i get my error but i dont know how to fix it. So within the file 'ur5robotiqgripper.urdf.xacro' is a joint called 'roboticcouplerjoint'. This joint's parent link is tool0 from the file 'ur5.urdf.xacro'. As far as I understand it, the file is included with '' Becasue within this file ' ' This is included.

I will add a screenshot of the Terminal error aswell.

I hope someone can help me,

Thanks already! C:\fakepath\Screenshot from 2021-06-28 11-30-34.png