ImportError: No module named acme.operators.dwh_operators

[rusalkamf]

Hello

I'm running airflow locally, and I followed the tutorial as far "drop DAGS into Airflow." I'm now getting errors that look like this:

ERROR - Failed to import: /home/trent/airflow/dags/product_staging.py
Traceback (most recent call last):
File "/home/trent/.local/lib/python2.7/site-packages/airflow/models/dagbag.py", line 236, in process_file
m = imp.load_source(mod_name, filepath)
File "/home/trent/airflow/dags/product_staging.py", line 18, in
from acme.operators.dwh_operators import PostgresToPostgresOperator
ImportError: No module named acme.operators.dwh_operators

This is happening for every dag. I checked, and $AIRFLOW_HOME/dags/acme/operators/dwh_operators.py exists on my machine. What do I need to do to get it to import correctly?