```Traceback (most recent call last):


 "/lib64/python3.6/site-packages/aiohttp/web_protocol.py", line 418, in start

resp = await task


 "/lib64/python3.6/site-packages/aiohttp/web_app.py", line 458, in _handle

resp = await handler(request)


 "lib64/python3.6/site-packages/aiohttp/web_middlewares.py", line 119, in impl

return await handler(request)


 "/lib64/python3.6/site-packages/aiohttp/web_middlewares.py", line 119, in impl

return await handler(request)


 "/lib64/python3.6/site-packages/connexion/apis/aiohttp_api.py", line 32, in oauth_problem_middleware

response = yield from handler(request)


 "/lib64/python3.6/site-packages/connexion/decorators/coroutine_wrappers.py", line 21, in wrapper

connexion_response = function(connexion_request)


 "/lib64/python3.6/site-packages/connexion/decorators/uri_parsing.py", line 143, in wrapper

response = function(request)


 "/lib64/python3.6/site-packages/connexion/decorators/validation.py", line 147, in wrapper

data.update(dict.fromkeys(request.files, ''))
# validator expects string..
AttributeError: 'bytes' object has no attribute 'update'```

Traceback (most recent call last):

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\qtconsole\comms.py", line 176, in comm_msg
comm.handle_msg(msg)

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\qtconsole\comms.py", line 264, in handle_msg
return self._msg_callback(msg)

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\spyder_kernels\comms\commbase.py", line 330, in _comm_message
self._message_handlers[spyder_msg_type](

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\spyder_kernels\comms\commbase.py", line 338, in _handle_remote_call
self.on_incoming_call(msg_dict)

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\spyder\plugins\ipythonconsole\comms\kernelcomm.py", line 156, in on_incoming_call
return super(KernelComm, self).on_incoming_call(call_dict)

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\spyder_kernels\comms\commbase.py", line 402, in on_incoming_call
self._set_pickle_protocol(call_dict["pickle_highest_protocol"])

 "C:\Users\JML.XPS-JML\anaconda3\envs\JML_Projects\lib\site-packages\spyder_kernels\comms\commbase.py", line 251, in _set_pickle_protocol
self._comms[self.calling_comm_id]['pickle_protocol'] = protocolKeyError: '7657bd888c9511eb87c25cc5d4503d85'