ape commands not working in activated product

without import following error:

Traceback (most recent call last):
  File "/usr/lib/python2.7/runpy.py", line 162, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/opt/webapps/schnesapeh/_lib/venv/src/ape/ape/main.py", line 118, in <module>
    main()
  File "/opt/webapps/schnesapeh/_lib/venv/src/ape/ape/main.py", line 115, in main
    run(sys.argv, features=features)
  File "/opt/webapps/schnesapeh/_lib/venv/src/ape/ape/main.py", line 63, in run
    tasks_module = importlib.import_module(feature + '.tasks')
  File "/usr/lib/python2.7/importlib/__init__.py", line 37, in import_module
    __import__(name)
  File "/opt/webapps/schnesapeh/_lib/venv/src/django-productline/django_productline/features/staticfiles/tasks.py", line 4, in <module>
    @tasks.requires_product_environment
  File "/opt/webapps/schnesapeh/_lib/venv/src/ape/ape/__init__.py", line 137, in __getattr__
    return self.get_task(name)
  File "/opt/webapps/schnesapeh/_lib/venv/src/ape/ape/__init__.py", line 104, in get_task
    raise TaskNotFound(name)
ape.TaskNotFound: requires_product_environment