**Description**
I have recently installed ROS moveit and i was trying to test IRIS quad in moveit, although when i am trying to upload iris.xacro from my px4 firmware, it showing error that "Undefined substitution argument rotors_description_dir None" and it not able to recognnize rotors description package in px4 firmware.
can anyone tell me i am forgetting to do any workaround !
Thanks
**Environment**
ROS Distro: [Kinetic]
OS Version: 16.04
**Steps to reproduce**
1. clone the px4 firmware from https://github.com/PX4/Firmware
2. launch rosmove it
3. load iris.xacro from rotor description
**Expected behaviour**
I should see iris model loaded using .xacro
**Actual behaviour**
ERROR : cannot find package rotor description
**Backtrace or Console output**
when processing file: /home/zubair/Firmware/Tools/sitl_gazebo/models/rotors_description/urdf/iris_base.xacro
[rospack] Error: package 'sitl_gazebo' not found
[librospack]: error while executing command
xacro: Traditional processing is deprecated. Switch to --inorder processing!
To check for compatibility of your document, use option --check-order.
For more infos, see http://wiki.ros.org/xacro#Processing_Order
Undefined substitution argument rotors_description_dir None
when processing file: /home/zubair/Firmware/Tools/sitl_gazebo/models/rotors_description/urdf/iris.xacro
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