Traceback (most recent call last):


 "c:\users\administrator\anaconda3\envs\slimyolo\lib\site-packages\pip\_internal\cli\base_command.py", line 153, in _main

status = self.run(options, args)


 "c:\users\administrator\anaconda3\envs\slimyolo\lib\site-packages\pip\_internal\commands\install.py", line 361, in run

wheel_cache


 "c:\users\administrator\anaconda3\envs\slimyolo\lib\site-packages\pip\_internal\cli\req_command.py", line 275, in populate_requirement_set

'(see "pip help %(name)s")' % opts)
pip._internal.exceptions.CommandError: You must give at least one requirement to install (see "pip help install")

[2019-02-28 14:15:27 -0500] [38860] [ERROR] Traceback (most recent call last):


 "c:\sandbox\scylla\venv-pipinstall\lib\site-packages\sanic\app.py", line 603, in handle_request

response = await response


 "c:\sandbox\scylla\venv-pipinstall\lib\site-packages\scylla\web\server.py", line 107, in api_v1_proxies

'total_page': math.ceil(count / limit),


 "c:\sandbox\scylla\venv-pipinstall\lib\site-packages\sanic\response.py", line 194, in json

return HTTPResponse(dumps(body, **kwargs), headers=headers,


 "C:\Users\cocai1\AppData\Local\Programs\Python\Python36\lib\json\__init__.py", line 231, in dumps

return _default_encoder.encode(obj)


 "C:\Users\cocai1\AppData\Local\Programs\Python\Python36\lib\json\encoder.py", line 199, in encode

chunks = self.iterencode(o, _one_shot=True)


 "C:\Users\cocai1\AppData\Local\Programs\Python\Python36\lib\json\encoder.py", line 257, in iterencode

return _iterencode(o, 0)


 "C:\Users\cocai1\AppData\Local\Programs\Python\Python36\lib\json\encoder.py", line 180, in default

o.__class__.__name__)
TypeError: Object of type 'datetime' is not JSON serializable
