Error Details
The migration process attempted to apply the migration 0003_drop_pickle but failed with the following traceback:
```bash
Operations to perform:
Target specific migration: 0003_drop_pickle, from constance
Running migrations:
Applying constance.0003_drop_pickle...Traceback (most recent call last):
File "/code/manage.py", line 23, in <module>
main()
File "/code/manage.py", line 19, in main
execute_from_command_line(sys.argv)
File "/code/.venv/lib/python3.12/site-packages/django/core/management/__init__.py", line 442, in execute_from_command_line
utility.execute()
File "/code/.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 "/code/.venv/lib/python3.12/site-packages/django/core/management/base.py", line 413, in run_from_argv
self.execute(*args, **cmd_options)
File "/code/.venv/lib/python3.12/site-packages/django/core/management/base.py", line 459, in execute
output = self.handle(*args, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/core/management/base.py", line 107, in wrapper
res = handle_func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/core/management/commands/migrate.py", line 357, in handle
post_migrate_state = executor.migrate(
^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/db/migrations/executor.py", line 135, in migrate
state = self._migrate_all_forwards(
^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/db/migrations/executor.py", line 167, in _migrate_all_forwards
state = self.apply_migration(
^^^^^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/db/migrations/executor.py", line 255, in apply_migration
state = migration.apply(state, schema_editor)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/code/.venv/lib/python3.12/site-packages/django/db/migrations/migration.py", line 132, in apply
operation.database_forwards(
File "/code/.venv/lib/python3.12/site-packages/django/db/migrations/operations/special.py", line 196, in database_forwards
self.code(from_state.apps, schema_editor)
File "/code/.venv/lib/python3.12/site-packages/constance/migrations/0003_drop_pickle.py", line 43, in migrate_pickled_data
print(pickle.loads(value))
^^^^^^^^^^^^^^^^^^^
_pickle.UnpicklingError: invalid load key, '{'.
```
The error indicates that there is an issue with unpickling data during the migration process. Specifically, it raises an `_pickle.UnpicklingError` with the message "invalid load key, '{'." This suggests that the data being loaded may be corrupted or not in the expected format.
* feat(docs): migrate to sphinx 7
feat(docs): add instant search
feat(docs): enable reproducible build with requirements.txt
fix(docs): warnings
WARNING: The pre-Sphinx 1.0 'intersphinx_mapping' format is deprecated and will be removed in Sphinx 8. Update to the current format as described in the documentation. Hint: "intersphinx_mapping = {'<name>': ('https://docs.python.org/', None)}".https://www.sphinx-doc.org/en/master/usage/extensions/intersphinx.html#confval-intersphinx_mapping
* feat(docs): add test build to GH CI
* Adding support for using a subdirectory of MEDIA_ROOT for file fields with CONSTANCE_FILE_ROOT setting
* Improving documentation for CONSTANCE_FILE_ROOT
* Updating PR branch to work with latest master
