W1 Assignment error

[Rukaiya_Bano]

My code works perfectly fine and has a training accuracy of 99.5% when I run it, but when I submit it, it shows this error:
Details of failed tests for create_train_val_dirs

Failed test case: create_train_val_dirs has incorrect type.
Expected:
typing.Callable,
but got:
<class ‘NoneType’>.

Details of failed tests for split_data

Failed test case: split_data has incorrect type.
Expected:
typing.Callable,
but got:
<class ‘NoneType’>.

Details of failed tests for train_val_generators

Failed test case: train_val_generators has incorrect type.
Expected:
typing.Callable,
but got:
<class ‘NoneType’>.

Details of failed tests for create_model

Failed test case: create_model has incorrect type.
Expected:
typing.Callable,
but got:
<class ‘NoneType’>.
Can anyone please tell me how to resolve it?

[Juan_Olano]

The issue seems to be in the graders servers, which is part of Coursera. This is happening to most, if not all, other learners. Please contact Coursera about this. DeepLearning.ai doesn’t manage the platform. We are also contacting Coursera about this.

My current recommendation is: please continue attempting to submit. At some point this will work.

[Rukaiya_Bano]

Okay. Thank you for sharing.

[chris.favila]

Hi Rukaiya! That type of error usually comes up if the notebook is not saved or if you renamed it. Kindly see this topic for other things you may want to watch out for. Hope this helps!