Update failed updating from netbox 3.6 to 4.1 ([Errno -3] Temporary failure in name resolution)

[ImPuttering]

I followed all of the instructions to update netbox-docker, but it failed to start:
Container netbox-docker-netbox-1 has Error - dependency failed to start: container netbox-docker-netbox-1 exited(1)
I don't know how to proceed - any help would be appreciated!

Docker version 27.3.1, build ce12230
Docker Compose version v2.29.7
Ubuntu 20.04.6 LTS

netbox log:

🧬 loaded config '/etc/netbox/config/configuration.py'
🧬 loaded config '/etc/netbox/config/extra.py'
🧬 loaded config '/etc/netbox/config/logging.py'
🧬 loaded config '/etc/netbox/config/plugins.py'
Traceback (most recent call last):
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 275, in ensure_connection
self.connect()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 256, in connect
self.connection = self.get_new_connection(conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/postgresql/base.py", line 277, in get_new_connection
connection = self.Database.connect(**conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/psycopg/connection.py", line 98, in connect
attempts = conninfo_attempts(params)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/psycopg/_conninfo_attempts.py", line 50, in conninfo_attempts
raise e.OperationalError(str(last_exc))
psycopg.OperationalError: [Errno -3] Temporary failure in name resolution

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
File "/opt/netbox/netbox/./manage.py", line 10, in
execute_from_command_line(sys.argv)
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/management/init.py", line 442, in execute_from_command_line
utility.execute()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/management/init.py", line 436, in execute
self.fetch_command(subcommand).run_from_argv(self.argv)
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/management/base.py", line 413, in run_from_argv
self.execute(*args, **cmd_options)
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/management/base.py", line 454, in execute
self.check()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/management/base.py", line 486, in check
all_issues = checks.run_checks(
^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/checks/registry.py", line 88, in run_checks
new_errors = check(app_configs=app_configs, databases=databases)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/checks/urls.py", line 42, in check_url_namespaces_unique
all_namespaces = _load_all_namespaces(resolver)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/core/checks/urls.py", line 61, in _load_all_namespaces
url_patterns = getattr(resolver, "url_patterns", [])
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/functional.py", line 47, in get
res = instance.dict[self.name] = self.func(instance)
^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/urls/resolvers.py", line 738, in url_patterns
patterns = getattr(self.urlconf_module, "urlpatterns", self.urlconf_module)
^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/functional.py", line 47, in get
res = instance.dict[self.name] = self.func(instance)
^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/urls/resolvers.py", line 731, in urlconf_module
return import_module(self.urlconf_name)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/importlib/init.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1331, in _find_and_load_unlocked
File "", line 935, in _load_unlocked
File "", line 995, in exec_module
File "", line 488, in _call_with_frames_removed
File "/opt/netbox/netbox/netbox/urls.py", line 27, in
path('core/', include('core.urls')),
^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/urls/conf.py", line 39, in include
urlconf_module = import_module(urlconf_module)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/lib/python3.12/importlib/init.py", line 90, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "", line 1387, in _gcd_import
File "", line 1360, in _find_and_load
File "", line 1331, in _find_and_load_unlocked
File "", line 935, in _load_unlocked
File "", line 995, in exec_module
File "", line 488, in _call_with_frames_removed
File "/opt/netbox/netbox/core/urls.py", line 4, in
from . import views
File "/opt/netbox/netbox/core/views.py", line 191, in
class ObjectChangeListView(generic.ObjectListView):
File "/opt/netbox/netbox/core/views.py", line 192, in ObjectChangeListView
queryset = ObjectChange.objects.valid_models()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/models/manager.py", line 87, in manager_method
return getattr(self.get_queryset(), name)(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/netbox/core/querysets.py", line 18, in valid_models
content_types = ContentType.objects.get_for_models(*apps.get_models()).values()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/contrib/contenttypes/models.py", line 91, in get_for_models
for ct in cts:
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/models/query.py", line 400, in iter
self._fetch_all()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/models/query.py", line 1928, in _fetch_all
self._result_cache = list(self._iterable_class(self))
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/models/query.py", line 91, in iter
results = compiler.execute_sql(
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/models/sql/compiler.py", line 1560, in execute_sql
cursor = self.connection.cursor()
^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 316, in cursor
return self._cursor()
^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 292, in _cursor
self.ensure_connection()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 274, in ensure_connection
with self.wrap_database_errors:
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/utils.py", line 91, in exit
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 275, in ensure_connection
self.connect()
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/base/base.py", line 256, in connect
self.connection = self.get_new_connection(conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/django/db/backends/postgresql/base.py", line 277, in get_new_connection
connection = self.Database.connect(**conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/psycopg/connection.py", line 98, in connect
attempts = conninfo_attempts(params)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/netbox/venv/lib/python3.12/site-packages/psycopg/_conninfo_attempts.py", line 50, in conninfo_attempts
raise e.OperationalError(str(last_exc))
django.db.utils.OperationalError: [Errno -3] Temporary failure in name resolution