#31592: Reverting Django 3.1. to Django 3.0.6 raises "binascii.Error: Incorrect
     Reporter:  אורי          |                    Owner:  nobody
         Type:  Bug           |                   Status:  closed
    Component:  Core (Other)  |                  Version:  3.1
     Severity:  Normal        |               Resolution:  invalid
     Keywords:                |             Triage Stage:  Unreviewed
    Has patch:  0             |      Needs documentation:  0
  Needs tests:  0             |  Patch needs improvement:  0
Easy pickings:  0             |                    UI/UX:  0
Changes (by felixxm):

 * status:  new => closed
 * resolution:   => invalid
 * component:  Uncategorized => Core (Other)


 Thanks for this ticket. This error is not related with migrations but with
 sessions and changes of a hashing algorithm from the SHA-1 to SHA-256:
   File "django/contrib/sessions/backends/base.py", line 110, in decode
     encoded_data = base64.b64decode(session_data.encode('ascii'))
   File "python3.6/base64.py", line 87, in b64decode
     return binascii.a2b_base64(s)
 binascii.Error: Incorrect padding

 To fix this you need to remove sessions from cache, e.g.
 from django.contrib.sessions.models import Session

Ticket URL: <https://code.djangoproject.com/ticket/31592#comment:2>
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