Failed Migrations when upgrading from v3.7.8 to v4.1.7

[kevinscottuk]

When running ./upgrade.sh when the process gets to Running Migrations it fails with this output.

Installing collected packages: netbox-topology-views, netbox-ipcalculator, pyasn1, pyasn1-modules, python-ldap, django-auth-ldap
Successfully installed django-auth-ldap-5.2.0 netbox-ipcalculator-1.4.9 netbox-topology-views-4.2.1 pyasn1-0.6.1 pyasn1-modules-0.4.2 python-ldap-3.4.4
Applying database migrations (python3 netbox/manage.py migrate)...
Operations to perform:
  Apply all migrations: account, auth, circuits, contenttypes, core, dcim, django_rq, extras, ipam, sessions, social_django, taggit, tenancy, users, virtualization, vpn, wireless
Running migrations:
  Applying extras.0109_script_model...Traceback (most recent call last):
  File "/opt/netbox/netbox/manage.py", line 10, in <module>
    execute_from_command_line(sys.argv)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
    utility.execute()
  File "/opt/netbox/venv/lib/python3.10/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/python3.10/site-packages/django/core/management/base.py", line 413, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/base.py", line 459, in execute
    output = self.handle(*args, **options)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/base.py", line 107, in wrapper
    res = handle_func(*args, **kwargs)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/core/management/commands/migrate.py", line 356, in handle
    post_migrate_state = executor.migrate(
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 135, in migrate
    state = self._migrate_all_forwards(
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 167, in _migrate_all_forwards
    state = self.apply_migration(
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/migrations/executor.py", line 252, in apply_migration
    state = migration.apply(state, schema_editor)
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/migrations/migration.py", line 132, in apply
    operation.database_forwards(
  File "/opt/netbox/venv/lib/python3.10/site-packages/django/db/migrations/operations/special.py", line 193, in database_forwards
    self.code(from_state.apps, schema_editor)
  File "/opt/netbox/netbox/extras/migrations/0109_script_model.py", line 96, in update_scripts
    for script_name in get_module_scripts(module):
  File "/opt/netbox/netbox/extras/migrations/0109_script_model.py", line 64, in get_module_scripts
    module = loader.load_module()
  File "<frozen importlib._bootstrap_external>", line 548, in _check_name_wrapper
  File "<frozen importlib._bootstrap_external>", line 1063, in load_module
  File "<frozen importlib._bootstrap_external>", line 888, in load_module
  File "<frozen importlib._bootstrap>", line 290, in _load_module_shim
  File "<frozen importlib._bootstrap>", line 719, in _load
  File "<frozen importlib._bootstrap>", line 688, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 883, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "/opt/netbox/netbox/reports/deviceidentityreport.py", line 1, in <module>
    class DeviceIdentityReport(Report):
NameError: name 'Report' is not defined

[chrisgerdener]

I had a similar issue when doing the change from v3.7.8 to 4.2.x. For me it turned out that one of my custom scripts caused the migration to fail. The script in question was accesing device_type, but that key had changed names from v3 to v4 and is now called only device.
I am guessing you have a similar problem with report.
You could remove your custom scripts and then try migration again