# What this PR does
Fix the following pre-existing `import` `mypy` errors (related to
#2392):
```bash
❯ mypy .
settings/prod_without_db.py:4: error: Cannot find implementation or library stub for module named "uwsgi" [import]
engine/logging/formatters.py:2: error: Skipping analyzing "pythonjsonlogger": module is installed, but missing library stubs or py.typed marker [import]
engine/logging/formatters.py:2: note: See https://mypy.readthedocs.io/en/stable/running_mypy.html#missing-imports
engine/celery.py:7: error: Skipping analyzing "celery.utils.debug": module is installed, but missing library stubs or py.typed marker [import]
Found 3 errors in 3 files (checked 595 source files)
```
## Which issue(s) this PR fixes
## Checklist
- [ ] Unit, integration, and e2e (if applicable) tests updated
- [ ] Documentation added (or `pr:no public docs` PR label added if not
required)
- [ ] `CHANGELOG.md` updated (or `pr:no changelog` PR label added if not
required)
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