Problem:
The command aggregate for a collection needs a cursor option (mongodb 3.6
https://docs.mongodb.com/manual/reference/command/aggregate/#dbcmd.aggregate)
Solution:
Location:
/edx/app/edxapp/edx-platform/common/lib/xmodule/xmodule/contentstore/mongo.py
function: get_all_content_for_course
change the next code:
items = self.fs_files.aggregate(pipeline_stages)
if items['result']:
result = items['result'][0]
count = result['count']
assets = list(result['results'])
else:
no results
count = 0
assets = []
for this:
count = 0
assets = []
items = self.fs_files.aggregate(pipeline_stages,cursor=
{"batchSize": 0 })
for result in items:
count= result['count']
assets=list(result['results'])
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