Traceback (most recent call last):


 "main.py", line 23, in <module>

while not t.terminate():


 "D:\EDSR-PyTorch-master\EDSR-PyTorch-master\src\trainer.py", line 139, in terminate

self.test()


 "D:\EDSR-PyTorch-master\EDSR-PyTorch-master\src\trainer.py", line 83, in test

if self.args.save_results: self.ckp.begin_background()


 "D:\EDSR-PyTorch-master\EDSR-PyTorch-master\src\utility.py", line 141, in begin_background

for p in self.process: p.start()


 "C:\Users\Zz\Anaconda3\lib\multiprocessing\process.py", line 105, in start

self._popen = self._Popen(self)


 "C:\Users\Zz\Anaconda3\lib\multiprocessing\context.py", line 223, in _Popen

return _default_context.get_context().Process._Popen(process_obj)


 "C:\Users\Zz\Anaconda3\lib\multiprocessing\context.py", line 322, in _Popen

return Popen(process_obj)


 "C:\Users\Zz\Anaconda3\lib\multiprocessing\popen_spawn_win32.py", line 65, in __init__

reduction.dump(process_obj, to_child)


 "C:\Users\Zz\Anaconda3\lib\multiprocessing\reduction.py", line 60, in dump

ForkingPickler(file, protocol).dump(obj)
AttributeError: Can't pickle local object 'checkpoint.begin_background.<locals>.bg_target'

Traceback (most recent call last):


 "/hummingbot/client/hummingbot_application.py", line 155, in _handle_command

f(**kwargs)


 "/hummingbot/client/command/history_command.py", line 17, in history

self.list_trades()


 "/hummingbot/client/command/list_command.py", line 100, in list_trades

df: pd.DataFrame = TradeFill.to_pandas(queried_trades)


 "/hummingbot/model/trade_fill.py", line 82, in to_pandas

fee_strs = [f"{fee_tuple[0]} {fee_tuple[1]}" for fee_tuple in trade.trade_fee.flat_fees]
AttributeError: 'dict' object has no attribute 'flat_fees'
