Can anyone convert the following PDF to a DXF?
I got the following error, which I don't know how to overcome. 
Anyone have any pointers?
file: https://www.dropbox.com/s/4lmkni2tyi8y6qk/Existing%20Floor%20plan.pdf?dl=1
 

```

Traceback (most recent call last):
  File "dxf_outlines.py", line 332, in <module>
    DxfOutlines().run()
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\base.py", line 140, in run
    self.save_raw(self.effect())
  File "dxf_outlines.py", line 317, in effect
    self.process_group(doc)
  File "dxf_outlines.py", line 265, in process_group
    self.process_group(node)
  File "dxf_outlines.py", line 265, in process_group
    self.process_group(node)
  File "dxf_outlines.py", line 265, in process_group
    self.process_group(node)
  [Previous line repeated 979 more times]
  File "dxf_outlines.py", line 260, in process_group
    trans = group.get('transform')
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\elements\_base.py", line 175, in get
    value = getattr(self, prop, None)
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\elements\_base.py", line 153, in __getattr__
    setattr(self, name, value)
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\elements\_base.py", line 165, in __setattr__
    self.attrib[attr] = str(value)
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\transforms.py", line 501, in __str__
    if not self:
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\transforms.py", line 363, in __bool__
    return not self.__eq__(Transform())
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\transforms.py", line 524, in __eq__
    for l, r in zip(self.to_hexad(), Transform(matrix).to_hexad()))
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\transforms.py", line 312, in __init__
    self._set_matrix(matrix)
  File "C:\Program Files\Inkscape\share\inkscape\extensions\inkex\transforms.py", line 321, in _set_matrix
    if isinstance(matrix, (str, unicode)):
RecursionError: maximum recursion depth exceeded in __instancecheck__

```

It might be possible to do, but it could take some time. The document has thousands of objects (maybe tens of thousands).

The pdf when opened in Inkscape has thousands of groups, which may need to be ungrouped before conversion to DXF. I'd try to do it in small chunks, and delete any objects not needed.

another work around: https://community.osarch.org/discussion/571/inkscape-error-when-converting-pdf-to-dxf