aecmos.py is often failed with "json_body = response.json()"

[YangangCao]

I try to run aecmos.py(there are total 800 files to test) in MacBook Air, Linux server in China and Linux server in America, they are all failed with "json_body = response.json()" in different rate of progress(sometime 30%, sometime 2%, and sometime 0%). Are there any idea to finish test?