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According to the documentation (here), the joint_positions field is a list of float64 elements.
You appear to be assigninging a list of numpy types to it.
That is ok with Python (as the interpreter itself doesn't care), but genpy can't work with those, hence the error.
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According to the documentation (here), the joint_positions field is a list of float64 elements.
You appear to be assigninging a list of numpy types to it.
That is ok with Python (as the interpreter itself doesn't care), but genpy can't work with those, hence the error.
Edit:
Now I converted my numpy types to Float64, but the error remains.
Float64 is a ROS msg type that wraps float64 primitive types.
And float64 is not a Python type. If you use float(..) it should work.
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