C1 W4 assignment 1 :I completed the assignment and cleared all tests. But when I submit the assignment, it gives 0/100 and following:

Course Q&A Deep Learning Specialization Neural Networks and Deep Learning
1

[ValidateApp | INFO] Validating ‘/home/jovyan/work/submitted/courseraLearner/W4A1/Building_your_Deep_Neural_Network_Step_by_Step.ipynb’
[ValidateApp | ERROR] Traceback (most recent call last):
File “/opt/conda/lib/python3.7/site-packages/nbgrader/preprocessors/checkcellmetadata.py”, line 11, in preprocess
MetadataValidator().validate_nb(nb)
File “/opt/conda/lib/python3.7/site-packages/nbgrader/nbgraderformat/v3.py”, line 107, in validate_nb
raise ValidationError(“Duplicate grade id: {}”.format(grade_id))
jsonschema.exceptions.ValidationError: Duplicate grade id: cell-4d6e09486a53f4c4

[ValidateApp | ERROR] Notebook failed to validate; the nbgrader metadata may be corrupted.
[ValidateApp | ERROR] Traceback (most recent call last):
File “/opt/conda/lib/python3.7/site-packages/nbgrader/apps/validateapp.py”, line 72, in start
validator.validate_and_print(filename)
File “/opt/conda/lib/python3.7/site-packages/nbgrader/validator.py”, line 340, in validate_and_print
results = self.validate(filename)
File “/opt/conda/lib/python3.7/site-packages/nbgrader/validator.py”, line 311, in validate
nb = self._preprocess(nb)
File “/opt/conda/lib/python3.7/site-packages/nbgrader/validator.py”, line 290, in _preprocess
nb, resources = pp.preprocess(nb, resources)
File “/opt/conda/lib/python3.7/site-packages/nbgrader/preprocessors/checkcellmetadata.py”, line 16, in preprocess
raise ValidationError(msg)
jsonschema.exceptions.ValidationError: Notebook failed to validate; the nbgrader metadata may be corrupted.

[ValidateApp | ERROR] nbgrader encountered a fatal error while trying to validate ‘submitted/courseraLearner/W4A1/Building_your_Deep_Neural_Network_Step_by_Step.ipynb’

2

Update:

  • I opened a new notebook and copied my old code.

  • I was able pass the assignment. :grinning:

3

Great! Glad to hear you found the solution on your own power. That was what I would have suggested: it looked like something other than the code about the notebook had gotten corrupted somehow.

4

Then how do you submit the assignment because there is no option of submit assignment

5

In new notebook there is no option of submit