[FeedbackApp | ERROR] Traceback (most recent call last):


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/nbgrader/converters/base.py", line 293, in convert_notebooks

self.convert_single_notebook(notebook_filename)


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/nbgrader/converters/base.py", line 249, in convert_single_notebook

output, resources = self.exporter.from_filename(notebook_filename, resources=resources)

:

:

:
MISSING CHUNK HERE 

:

: 

<b>Comments:</b> {{ cell.metadata.nbgrader.comment | markdown2html | strip_files_prefix }}


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/nbconvert/exporters/html.py", line 74, in markdown2html

cell = context['cell']


 "/Library/Frameworks/Python.framework/Versions/3.7/lib/python3.7/site-packages/jinja2/runtime.py", line 305, in __getitem__

raise KeyError(key)

KeyError: 'cell'


Traceback (most recent call last):


 "geo_heatmap.py", line 85, in <module>

generator.run(data_file, output_file)


 "geo_heatmap.py", line 73, in run

self.loadData(data_file)


 "geo_heatmap.py", line 30, in loadData

lat = round(loc["latitudeE7"] / 1e7, 6)
KeyError: 'latitudeE7'
