#30464: 'AppRegistryNotReady' error after Django Upgrade from 1.8 to 1.11 
version
-------------------------------------+-------------------------------------
               Reporter:  vinay      |          Owner:  nobody
                   Type:             |         Status:  new
  Cleanup/optimization               |
              Component:             |        Version:  1.11
  Uncategorized                      |       Keywords:  Django Upgrade,
               Severity:  Normal     |  Django-1.11, Django-1.8,
           Triage Stage:             |  AppRegistryNotReady
  Unreviewed                         |      Has patch:  0
    Needs documentation:  0          |    Needs tests:  0
Patch needs improvement:  0          |  Easy pickings:  0
                  UI/UX:  0          |
-------------------------------------+-------------------------------------
 In our process of upgrading our Django project from 1.8 to 1.11 version,
 we removed all the deprecation warnings/errors according to Django-1.11
 release notes.
 But, after updating the Django version to 1.11 in the project's virtual
 environment, we got the following error:

 {{{
 raise AppRegistryNotReady("Apps aren't loaded yet.")
 django.core.exceptions.AppRegistryNotReady: Apps aren't loaded yet.
 }}}
 We have many installed apps in the project and using PostgreSQL-9.5
 database. We know that the apps which have model classes in it, cause this
 error to occur.
 The above error even occured when connecting to the database using
 connection cursor:

 {{{
 django.db.connection.cursor().execute()
 }}}

-- 
Ticket URL: <https://code.djangoproject.com/ticket/30464>
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