Error while creating a new Django application

[Scorpion197]

I'm trying to create a new Django application after cloning the repo and installing necessary requirement using the following command

./manage.py lms startapp CustomApp

But i got the following error:

Traceback (most recent call last):
  File "./manage.py", line 103, in <module>
    startup.run()
  File "/home/scorpion197/edx-platform/lms/startup.py", line 22, in run
    django.setup()
  File "/home/scorpion197/edx-platform/edxenv/lib/python3.8/site-packages/django/__init__.py", line 24, in setup
    apps.populate(settings.INSTALLED_APPS)
  File "/home/scorpion197/edx-platform/edxenv/lib/python3.8/site-packages/django/apps/registry.py", line 114, in populate
    app_config.import_models()
  File "/home/scorpion197/edx-platform/edxenv/lib/python3.8/site-packages/django/apps/config.py", line 301, in import_models
    self.models_module = import_module(models_module_name)
  File "/usr/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 848, in exec_module
  File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
  File "/home/scorpion197/edx-platform/lms/djangoapps/bulk_email/models.py", line 22, in <module>
    from openedx.core.djangoapps.course_groups.cohorts import get_cohort_by_name
  File "/home/scorpion197/edx-platform/openedx/core/djangoapps/course_groups/cohorts.py", line 21, in <module>
    from lms.djangoapps.courseware import courses
  File "/home/scorpion197/edx-platform/lms/djangoapps/courseware/courses.py", line 52, in <module>
    from lms.djangoapps.courseware.block_render import get_block
  File "/home/scorpion197/edx-platform/lms/djangoapps/courseware/block_render.py", line 48, in <module>
    from xmodule.library_tools import LibraryToolsService
  File "/home/scorpion197/edx-platform/xmodule/library_tools.py", line 13, in <module>
    from openedx.core.djangoapps.content_libraries import api as library_api
  File "/home/scorpion197/edx-platform/openedx/core/djangoapps/content_libraries/api.py", line 78, in <module>
    from openedx.core.djangoapps.content_libraries import permissions
  File "/home/scorpion197/edx-platform/openedx/core/djangoapps/content_libraries/permissions.py", line 7, in <module>
    from openedx.core.djangoapps.content_libraries.models import ContentLibraryPermission
  File "/home/scorpion197/edx-platform/openedx/core/djangoapps/content_libraries/models.py", line 81, in <module>
    class ContentLibrary(models.Model):
  File "/home/scorpion197/edx-platform/edxenv/lib/python3.8/site-packages/django/db/models/base.py", line 113, in __new__
    raise RuntimeError(
RuntimeError: Model class openedx.core.djangoapps.content_libraries.models.ContentLibrary doesn't declare an explicit app_label and isn't in an application in INSTALLED_APPS.

[kiran1415]

@Scorpion197 which release/branch are you using?

[kdmccormick]

You need to have run pip install -e . first.

Please use https://discuss.openedx.org/ for help requests in the future.