TypeError: can't pickle SwigPyObject objects

[susanGhaderi]

Problem description

I try to get the diff between two models by this command
$ memote report diff /Users/GEM_01.xml /Users/GEM_02.xml
and then at the end I got this error
-->
========================================================================== 88 failed, 56 passed, 21 skipped in 352.64s (0:05:52) ===========================================================================
Traceback (most recent call last):
File "/opt/anaconda3/bin/memote", line 8, in
sys.exit(cli())
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 829, in call
return self.main(*args, **kwargs)
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 782, in main
rv = self.invoke(ctx)
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 1259, in invoke
return _process_result(sub_ctx.command.invoke(sub_ctx))
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 1066, in invoke
return ctx.invoke(self.callback, **ctx.params)
File "/opt/anaconda3/lib/python3.7/site-packages/click/core.py", line 610, in invoke
return callback(*args, **kwargs)
File "/opt/anaconda3/lib/python3.7/site-packages/memote/suite/cli/reports.py", line 422, in diff
results = pool.map(partial_test_diff, model_and_model_ver_tuple)
File "/opt/anaconda3/lib/python3.7/multiprocessing/pool.py", line 268, in map
return self._map_async(func, iterable, mapstar, chunksize).get()
File "/opt/anaconda3/lib/python3.7/multiprocessing/pool.py", line 657, in get
raise self._value
File "/opt/anaconda3/lib/python3.7/multiprocessing/pool.py", line 431, in _handle_tasks
put(task)
File "/opt/anaconda3/lib/python3.7/multiprocessing/connection.py", line 206, in send
self._send_bytes(_ForkingPickler.dumps(obj))
File "/opt/anaconda3/lib/python3.7/multiprocessing/reduction.py", line 51, in dumps
cls(buf, protocol).dump(obj)
TypeError: can't pickle SwigPyObject objects

Could someone please help me to figure it out, what is the reason? and how can I fix it?

[Midnighter]

@susanGhaderi apologies for the long wait. Can you please provide the platform and version information that we ask for?