Credentials can't be located for S3 Flask app in Heroku
问题 My flask app works locally with AWS S3 bucket, but when I try to get it to work in Heroku, I keep getting this error 2020-06-07T00:58:29.174989+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/botocore/signers.py", line 160, in sign 2020-06-07T00:58:29.174989+00:00 app[web.1]: auth.add_auth(request) 2020-06-07T00:58:29.174989+00:00 app[web.1]: File "/app/.heroku/python/lib/python3.6/site-packages/botocore/auth.py", line 357, in add_auth 2020-06-07T00:58:29.174989+00:00