Error when i run iai_kinect2

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I had already install the ROS indigo,Setup my ROS environment and install libfreenect2 which run nice. But:

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cd ~/catkin_ws/src/

git clone https://github.com/code-iai/iai_kinec...

cd iai_kinect2

rosdep install -r --from-paths .

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error about rosdep hit me, as following:

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turtlebot@turtlebot-HP-ZBook-14-G2:~/catkin_ws/src/iai_kinect2$ rosdep install -r --from-paths .

ERROR: the following packages/stacks could not have their rosdep keys resolvedto system dependencies:

kinect2_viewer: Cannot locate rosdep definition for [kinect2_bridge]

kinect2_bridge: Cannot locate rosdep definition for [kinect2_registration]

kinect2_calibration: Cannot locate rosdep definition for [kinect2_bridge]

Continuing to install resolvable dependencies...

All required rosdeps installed successfully

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help me! Thanks