TypeError: Unexpected type for parameter value None

asked 2021-04-08 22:41:23 -0500

Ataraxy gravatar image

Recently, i learn moveit2 in ros2-foxy by following tutorials.But when i run ros2 launch moveit2_tutorials demo.launch.py rviz_tutorial:=true,an error happendTypeError: Unexpected type for parameter value None andlaunch.invalid_launch_file_error.InvalidLaunchFileError: Caught exception when trying to load file of format [py]: Unexpected type for parameter value None.however,i dont know how to fix it。This problem bothered me for several days。So,i would be thankful for your help. This is the code of 'demo.launch.py'link text

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Have you figured this out? I have the same issue

DRO gravatar image DRO  ( 2021-10-05 18:16:34 -0500 )edit