Switches task serialization over to pickle format

src/paperless/settings.py

@@ -526,6 +526,10 @@ CELERY_RESULT_EXTENDED = True
 CELERY_RESULT_BACKEND = "django-db"
 CELERY_CACHE_BACKEND = "default"
 
+# This allows types to stay types through a .delay
+CELERY_TASK_SERIALIZER = "pickle"
+CELERY_ACCEPT_CONTENT = ["application/x-python-serialize"]
+
 CELERY_BEAT_SCHEDULE = {
     # Every ten minutes
     "Check all e-mail accounts": {