When starting a local agent, I got a python-box error "AttributeError: 'Config' object has no attribute 'datefmt'"

[anna_geller]

View in #prefect-community on Slack

Problem

@Andrea_Nerla: Hi folks, I’m receiving this error every time I try to run a Prefect script. For context I’m trying to receive Slack’s status notifications so I added the SLACK_WEBHOOK_URL in the config.toml and I’ve also opened prefect’s _init_.py out of curiosity. I don’t think I changed anything in it but I might have misclicked something.

File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 516, in __getattr__
    `value = object.__getattribute__(self, item)
AttributeError: 'Config' object has no attribute 'datefmt'
Entire log:
Traceback (most recent call last):
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 488, in __getitem__
    return super().__getitem__(item)`
KeyError: 'datefmt'

`The above exception was the direct cause of the following exception:`

`Traceback (most recent call last):`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 514, in __getattr__`
    `value = self.__getitem__(item, _ignore_default=True)`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 509, in __getitem__`
    `raise BoxKeyError(str(err)) from _exception_cause(err)`
`box.exceptions.BoxKeyError: "'datefmt'"`

`During handling of the above exception, another exception occurred:`

`Traceback (most recent call last):`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 516, in __getattr__`
    `value = object.__getattribute__(self, item)`
`AttributeError: 'Config' object has no attribute 'datefmt'`

`The above exception was the direct cause of the following exception:`

`Traceback (most recent call last):`
  `File "c:\Users\andrea.nerla\Desktop\sidal\sidal prefect\prefect test var risorsas.py", line 1, in <module>`
    `import prefect`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\__init__.py", line 1, in <module>`
    `import prefect.utilities`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\__init__.py", line 1, in <module>`
    `import prefect.utilities.logging`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\logging.py", line 261, in <module>`
    `context.logger = prefect_logger = configure_logging()`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\__init__.py", line 1, in <module>`
    `import prefect.utilities`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\__init__.py", line 1, in <module>`
    `import prefect.utilities.logging`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\logging.py", line 261, in <module>`
    `context.logger = prefect_logger = configure_logging()`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\logging.py", line 258, in configure_logging`
    `return _create_logger(name)`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\prefect\utilities\logging.py", line 230, in _create_logger`
    `context.config.logging.format, context.config.logging.datefmt`
  `File "C:\Users\andrea.nerla\AppData\Local\Programs\Python\Python39\lib\site-packages\box\box.py", line 530, in __getattr__`
    `raise BoxKeyError(str(err)) from _exception_cause(err)`
`box.exceptions.BoxKeyError: "'Config' object has no attribute 'datefmt'"`

@Kevin_Kho: Are you using flow.run() or is this with an agent?

@Andrea_Nerla: Right now I restarted the system and I’m trying to run prefect agent local start , which gives me this error. But before of it I was having the same error with a flow.run()

@Kevin_Kho: Can you do pip show python-box in your terminal and show me the output?

@Andrea_Nerla:

@Kevin_Kho: And for pip show prefect?

@Andrea_Nerla:

Solution

@Kevin_Kho: I am on the same but can’t replicate. I would honestly just try re-installing prefect

@Andrea_Nerla: It did resolve the error, thanks.