Thanks. That worked. I converted the sqlite3 database to a postgresql database and I configured the database in the DATABASES definition of the Django settings. The database lock errors have disappeared but I am getting a Django warning of an improper datetime field. I assume that is related to the database conversion. Any advice for a possible solution? These are the error messages: 16:30:04 [Q] INFO Q Cluster vegan-muppet-fanta-iowa starting. 16:30:04 [Q] INFO Process-1:1 ready for work at 6340 16:30:04 [Q] INFO Process-1:2 ready for work at 6341 16:30:04 [Q] INFO Process-1:3 ready for work at 6342 16:30:04 [Q] INFO Process-1:4 ready for work at 6343 16:30:04 [Q] INFO Process-1:5 monitoring at 6344 16:30:04 [Q] INFO Process-1 guarding cluster vegan-muppet-fanta-iowa 16:30:04 [Q] INFO Process-1:6 pushing tasks at 6345 16:30:04 [Q] INFO Q Cluster vegan-muppet-fanta-iowa running. 16:30:35 [Q] INFO Enqueued 1 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 18:51:09.290256) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:30:35 [Q] INFO Enqueued 2 16:30:35 [Q] INFO Enqueued 3 16:30:35 [Q] INFO Enqueued 4 16:30:35 [Q] INFO Enqueued 5 16:30:35 [Q] INFO Enqueued 6 16:30:35 [Q] INFO Enqueued 7 16:30:35 [Q] INFO Enqueued 8 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 16:11:04.923591) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:30:35 [Q] INFO Enqueued 9 16:30:35 [Q] INFO Enqueued 10 16:30:35 [Q] INFO Enqueued 11 16:30:36 [Q] INFO Enqueued 12 16:30:36 [Q] INFO Enqueued 13 16:30:36 [Q] INFO Enqueued 14 16:30:36 [Q] INFO Enqueued 15 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 20:11:04.923591) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:30:36 [Q] INFO Enqueued 16 16:30:36 [Q] INFO Enqueued 17 16:30:36 [Q] INFO Enqueued 18 16:30:36 [Q] INFO Enqueued 19 16:30:36 [Q] INFO Enqueued 20 16:30:36 [Q] INFO Enqueued 21 16:30:36 [Q] INFO Enqueued 22 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 22:51:09.290256) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:30:36 [Q] INFO Enqueued 23 16:30:36 [Q] INFO Enqueued 24 16:30:36 [Q] INFO Enqueued 25 16:30:36 [Q] INFO Enqueued 26 16:30:36 [Q] INFO Enqueued 27 16:30:36 [Q] INFO Enqueued 28 16:30:36 [Q] INFO Enqueued 29 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 15:11:59.385378) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:30:36 [Q] INFO Enqueued 30 16:30:36 [Q] INFO Enqueued 31 16:30:36 [Q] INFO Enqueued 32 16:30:36 [Q] INFO Enqueued 33 16:30:36 [Q] INFO Enqueued 34 16:30:36 [Q] INFO Enqueued 35 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField OrmQ.lock received a naive datetime (2023-09-11 20:29:35.702222) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:36:12 [Q] INFO Enqueued 36 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 16:00:37.799476) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:36:12 [Q] INFO Enqueued 37 16:36:12 [Q] INFO Enqueued 38 16:36:12 [Q] INFO Enqueued 39 16:36:12 [Q] INFO Enqueued 40 16:36:12 [Q] INFO Enqueued 41 16:36:12 [Q] INFO Enqueued 42 16:41:28 [Q] INFO Enqueued 43 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2020-08-20 04:31:47.179481) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:41:28 [Q] INFO Enqueued 44 16:41:28 [Q] INFO Enqueued 45 16:41:28 [Q] INFO Enqueued 46 16:41:28 [Q] INFO Enqueued 47 16:41:28 [Q] INFO Enqueued 48 16:41:28 [Q] INFO Enqueued 49 16:41:43 [Q] INFO Enqueued 50 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 15:04:40.631493) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:41:43 [Q] INFO Enqueued 51 16:41:43 [Q] INFO Enqueued 52 16:41:43 [Q] INFO Enqueued 53 16:41:43 [Q] INFO Enqueued 54 16:41:43 [Q] INFO Enqueued 55 16:41:43 [Q] INFO Enqueued 56 16:41:55 [Q] INFO Enqueued 57 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 14:48:41.478931) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 16:41:55 [Q] INFO Enqueued 58 16:41:55 [Q] INFO Enqueued 59 16:41:56 [Q] INFO Enqueued 60 16:41:56 [Q] INFO Enqueued 61 16:41:56 [Q] INFO Enqueued 62 16:41:56 [Q] INFO Enqueued 63 17:08:45 [Q] INFO Q Cluster early-lion-kentucky-mockingbird starting. 17:08:45 [Q] INFO Process-1:1 ready for work at 442208 17:08:45 [Q] INFO Process-1:2 ready for work at 442209 17:08:45 [Q] INFO Process-1:3 ready for work at 442210 17:08:45 [Q] INFO Process-1:4 ready for work at 442211 17:08:45 [Q] INFO Process-1:5 monitoring at 442212 17:08:45 [Q] INFO Process-1 guarding cluster early-lion-kentucky-mockingbird 17:08:45 [Q] INFO Process-1:6 pushing tasks at 442213 17:08:45 [Q] INFO Q Cluster early-lion-kentucky-mockingbird running. /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField OrmQ.lock received a naive datetime (2023-09-11 20:29:35.702222) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 17:21:33 [Q] INFO Q Cluster lima-music-jig-twelve starting. 17:21:33 [Q] INFO Process-1:1 ready for work at 590552 17:21:33 [Q] INFO Process-1:2 ready for work at 590553 17:21:33 [Q] INFO Process-1:3 ready for work at 590554 17:21:33 [Q] INFO Process-1:4 ready for work at 590555 17:21:33 [Q] INFO Process-1:5 monitoring at 590556 17:21:33 [Q] INFO Process-1 guarding cluster lima-music-jig-twelve 17:21:33 [Q] INFO Process-1:6 pushing tasks at 590557 17:21:33 [Q] INFO Q Cluster lima-music-jig-twelve running. /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField OrmQ.lock received a naive datetime (2023-09-11 20:29:35.702222) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 17:37:41 [Q] INFO Enqueued 64 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-06-18 14:47:07.649808) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 17:37:41 [Q] INFO Enqueued 65 17:37:41 [Q] INFO Enqueued 66 17:37:41 [Q] INFO Enqueued 67 17:37:41 [Q] INFO Enqueued 68 17:37:41 [Q] INFO Enqueued 69 17:37:41 [Q] INFO Enqueued 70 18:06:48 [Q] INFO Enqueued 71 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2023-08-12 02:12:43.097077) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 18:06:48 [Q] INFO Enqueued 72 18:06:48 [Q] INFO Enqueued 73 18:06:48 [Q] INFO Enqueued 74 18:06:48 [Q] INFO Enqueued 75 18:06:48 [Q] INFO Enqueued 76 18:06:48 [Q] INFO Enqueued 77 19:42:04 [Q] INFO Enqueued 78 /usr/lib/python3/dist-packages/django/db/models/fields/__init__.py:1424: RuntimeWarning: DateTimeField MailingList.created_at received a naive datetime (2022-10-03 18:31:55.715108) while time zone support is active. warnings.warn("DateTimeField %s received a naive datetime (%s)" 19:42:04 [Q] INFO Enqueued 79 19:42:04 [Q] INFO Enqueued 80 19:42:04 [Q] INFO Enqueued 81 19:42:04 [Q] INFO Enqueued 82 19:42:04 [Q] INFO Enqueued 83 19:42:04 [Q] INFO Enqueued 84