otree zipserver gives "Apps aren't loaded yet." error

[Elif Bike Ösün]

When I run the command "otree zipserver", I get the error below. I tried updating python, updating oTree, downgrading oTree but none seem to work. Could anyone help me on how to fix this?

"Running dpa-new_project.otreezip

Traceback (most recent call last):

  File "/Users/elifbikeosun/Library/Python/3.8/lib/python/site-packages/otree_startup/__init__.py", line 201, in do_django_setup

    django.setup()

  File "/Library/Python/3.8/site-packages/django/__init__.py", line 24, in setup

    apps.populate(settings.INSTALLED_APPS)

  File "/Library/Python/3.8/site-packages/django/apps/registry.py", line 91, in populate

    app_config = AppConfig.create(entry)

  File "/Library/Python/3.8/site-packages/django/apps/config.py", line 90, in create

    module = import_module(entry)

  File "/Library/Developer/CommandLineTools/Library/Frameworks/Python3.framework/Versions/3.8/lib/python3.8/importlib/__init__.py", line 127, in import_module

    return _bootstrap._gcd_import(name[level:], package, level)

  File "<frozen importlib._bootstrap>", line 1014, in _gcd_import

  File "<frozen importlib._bootstrap>", line 991, in _find_and_load

  File "<frozen importlib._bootstrap>", line 975, in _find_and_load_unlocked

  File "<frozen importlib._bootstrap>", line 671, in _load_unlocked

  File "<frozen importlib._bootstrap_external>", line 783, in exec_module

  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed

  File "/private/var/folders/f8/b971xh6d1dq92nx5497fvx080000gn/T/tmpywwu6mr7/prisoner/__init__.py", line 2, in <module>

    from otree.api import *

  File "/Users/elifbikeosun/Library/Python/3.8/lib/python/site-packages/otree/api.py", line 2, in <module>

    from otree.models import BaseSubsession, BaseGroup, BasePlayer, ExtraModel  # noqa

  File "/Users/elifbikeosun/Library/Python/3.8/lib/python/site-packages/otree/models/__init__.py", line 5, in <module>

    from otree.db.models import *  # noqa

  File "/Users/elifbikeosun/Library/Python/3.8/lib/python/site-packages/otree/db/models.py", line 101, in <module>

    class OTreeModel(models.Model, metaclass=OTreeModelBase):

  File "/Users/elifbikeosun/Library/Python/3.8/lib/python/site-packages/otree/db/models.py", line 35, in __new__

    new_class = super().__new__(mcs, name, bases, attrs)

  File "/Library/Python/3.8/site-packages/django/db/models/base.py", line 103, in __new__

    app_config = apps.get_containing_app_config(module)

  File "/Library/Python/3.8/site-packages/django/apps/registry.py", line 252, in get_containing_app_config

    self.check_apps_ready()

  File "/Library/Python/3.8/site-packages/django/apps/registry.py", line 135, in check_apps_ready

    raise AppRegistryNotReady("Apps aren't loaded yet.")

django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet."

[Chris @ oTree]

That traceback indicates that the app is written for oTree 5, but you have oTree 3 installed (it mentions Django, which is gone in oTree 5). Upgrade to oTree Lite with:

pip3 install -U otree

If it still gives you that traceback, that suggests you have multiple Pythons installed. Make sure to uninstall the other one to avoid confusion.

[Elif Bike Ösün]

I have only one Python installed. The new error I get when I upgrade to oTree 5 is the following:

"bash-3.2$ otree zipserver

Traceback (most recent call last):

  File "/usr/local/bin/otree", line 10, in <module>

    sys.exit(execute_from_command_line())

  File "/Library/Python/3.8/site-packages/otree_startup/__init__.py", line 106, in execute_from_command_line

    from . import zipserver  # expensive import

  File "/Library/Python/3.8/site-packages/otree_startup/zipserver.py", line 8, in <module>

    from otree.management.commands.unzip import unzip

ModuleNotFoundError: No module named 'otree.management'"

[Chris @ oTree]

Try uninstalling:

pip3 uninstall otree

Because that tracebacks shows that you still have at least part of the old otree installed. Maybe it didn't uninstall fully. (There is no "otree_startup" package in oTree 5)