Cannot save the model in .pkl file

[makaveli10]

Restore model from save/lstm_p0.7_rnn100_batch16_unfold8 successfully!
Traceback (most recent call last):
File "test.py", line 104, in
res = evaluate(args)
File "test.py", line 83, in evaluate
joblib.dump(model, joblib_file)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 502, in dump
NumpyPickler(f, protocol=protocol).dump(value)
File "//anaconda3/lib/python3.7/pickle.py", line 437, in dump
self.save(obj)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 549, in save
self.save_reduce(obj=obj, *rv)
File "//anaconda3/lib/python3.7/pickle.py", line 662, in save_reduce
save(state)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 504, in save
f(self, obj) # Call unbound method with explicit self
File "//anaconda3/lib/python3.7/pickle.py", line 856, in save_dict
self._batch_setitems(obj.items())
File "//anaconda3/lib/python3.7/pickle.py", line 882, in _batch_setitems
save(v)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 549, in save
self.save_reduce(obj=obj, *rv)
File "//anaconda3/lib/python3.7/pickle.py", line 662, in save_reduce
save(state)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 504, in save
f(self, obj) # Call unbound method with explicit self
File "//anaconda3/lib/python3.7/pickle.py", line 856, in save_dict
self._batch_setitems(obj.items())
File "//anaconda3/lib/python3.7/pickle.py", line 882, in _batch_setitems
save(v)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 549, in save
self.save_reduce(obj=obj, *rv)
File "//anaconda3/lib/python3.7/pickle.py", line 662, in save_reduce
save(state)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 504, in save
f(self, obj) # Call unbound method with explicit self
File "//anaconda3/lib/python3.7/pickle.py", line 856, in save_dict
self._batch_setitems(obj.items())
File "//anaconda3/lib/python3.7/pickle.py", line 882, in _batch_setitems
save(v)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 549, in save
self.save_reduce(obj=obj, *rv)
File "//anaconda3/lib/python3.7/pickle.py", line 662, in save_reduce
save(state)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 504, in save
f(self, obj) # Call unbound method with explicit self
File "//anaconda3/lib/python3.7/pickle.py", line 856, in save_dict
self._batch_setitems(obj.items())
File "//anaconda3/lib/python3.7/pickle.py", line 882, in _batch_setitems
save(v)
File "//anaconda3/lib/python3.7/site-packages/joblib/numpy_pickle.py", line 292, in save
return Pickler.save(self, obj)
File "//anaconda3/lib/python3.7/pickle.py", line 524, in save
rv = reduce(self.proto)
TypeError: can't pickle _thread.RLock objects