Bug by import dxf file

hi,
I import a dxf file and I encounter this error

Python: Traceback (most recent call last):
File “C:\Program Files\Blender Foundation\Blender 2.92\2.92\scripts\addons\io_import_dxf_init_.py”, line 541, in execute
proj_dxf, proj_scn, self.represent_thickness_and_width, self.import_atts, dxf_unit_scale)
File “C:\Program Files\Blender Foundation\Blender 2.92\2.92\scripts\addons\io_import_dxf_init_.py”, line 119, in read
errors = do.entities(os.path.basename(filename).replace(".dxf", “”), new_scene)
File “C:\Program Files\Blender Foundation\Blender 2.92\2.92\scripts\addons\io_import_dxf\dxfimport\do.py”, line 1627, in entities
self.combined_objects((en for en in self.dwg.modelspace() if is_.combined_entity(en)), scene)
File “C:\Program Files\Blender Foundation\Blender 2.92\2.92\scripts\addons\io_import_dxf\dxfimport\do.py”, line 1516, in combined_objects
for atts, by_att in groupsort.by_attributes(grouped_entities):
File “C:\Program Files\Blender Foundation\Blender 2.92\2.92\scripts\addons\io_import_dxf\dxfimport\groupsort.py”, line 90, in by_attributes
return itertools.groupby(sorted(entities, key=attributes), key=attributes)
TypeError: ‘<’ not supported between instances of ‘NoneType’ and ‘tuple’

location: :-1

thank you for your help

(The python dxf import addons tried to compare something which isn’t comparable…)
I believe DXF support seems to be not so good and not everything is supported (?). Maybe try to import in another version of blender? Can you try in another SW (maybe a simple DXF-viewer)? Or export with other settings? Or even other format?