Warning: One or more input types do not match. The version of LayerNames with the type (Revit.Elements.Element) parameter could not be found 
how can i solved it?
Hi,
What is your input?
the dwg file linked in revit
i just want to catch the axis of the dwg file
Can you share your dwg file?
i have just solved it.
The problem why it happened was the version of revit and the node package were not compatible.
Thank you~~ 
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