In which file did you encounter the issue?

python-docs-samples/appengine/flexible/pubsub/main.py

Did you change the file? If so, how?

No

Describe the issue

Error when deploying to App Engine:
from google.cloud.pubsub.connection import Connection File "/env/lib/python3.4/site-packages/google/cloud/pubsub/connection.py", line 19, in <module> from google.cloud import connection as base_connection ImportError: cannot import name 'connection'

In the CLI I eventually get the below error and the app simply is repeatedly relaunching.

ERROR: (gcloud.app.deploy) Error Response: [13] Timed out when starting VMs. It's possible that the application code is unhealthy.