# Which issue(s) this PR fixes
when running the mobile app (emulator) + OnCall locally and trying to
trigger "You're Going OnCall" push notifications, I was seeing this in
the `celery` logs:
```bash
2023-05-24 21:39:54,032 source=engine:celery worker=ForkPoolWorker-3 task_id=cf9e5b52-a213-430a-8e3c-d6c3bed53318 task_name=apps.mobile_app.tasks.conditionally_send_going_oncall_push_notifications_for_schedule name=celery.app.trace level=INFO Task apps.mobile_app.tasks.conditionally_send_going_oncall_push_notifications_for_schedule[cf9e5b52-a213-430a-8e3c-d6c3bed53318] retry: Retry in 2s: NameError("name 'MobileAppUserSettings' is not defined")
```
This PR patches that by adding the import (inside the relevant function,
to avoid circular imports). After adding this import, I am seeing push
notifications being sent successfully:
```bash
2023-05-24 21:44:08,910 source=engine:celery worker=ForkPoolWorker-3 task_id=71a708b5-9982-4b71-b719-17ed5867dfe1 task_name=apps.mobile_app.tasks.conditionally_send_going_oncall_push_notifications_for_schedule name=apps.mobile_app.tasks level=INFO Evaluating if we should send push notification for schedule 1 for user UWZ6FR5T2KG7U
2023-05-24 21:44:08,912 source=engine:celery worker=ForkPoolWorker-3 task_id=71a708b5-9982-4b71-b719-17ed5867dfe1 task_name=apps.mobile_app.tasks.conditionally_send_going_oncall_push_notifications_for_schedule name=apps.mobile_app.tasks level=INFO timing is right to send going oncall push notification
seconds_until_shift_starts: 476
user_notification_timing_preference: 43200
timing_window_lower: 42780
timing_window_upper: 43620
shift_starts_within_users_notification_timing_preference: False
shift_starts_within_fifteen_minutes: True
2023-05-24 21:44:08,916 source=engine:celery worker=ForkPoolWorker-3 task_id=71a708b5-9982-4b71-b719-17ed5867dfe1 task_name=apps.mobile_app.tasks.conditionally_send_going_oncall_push_notifications_for_schedule name=apps.mobile_app.tasks level=DEBUG Sending push notification with message: {"android": {"priority": "high"}, "apns": {"headers": {"apns-priority": "10"}, "payload": {"aps": {"alert": {"title": "You are going on call in 7 minutes for schedule joey test"}, "interruption-level": "time-sensitive", "sound": {"name": "default_sound.aiff"}, "thread-id": "SZM7GDPI2VI3F:UWZ6FR5T2KG7U:going-oncall"}}}, "data": {"info_notification_sound_name": "default_sound.mp3", "info_notification_volume": "0.8", "info_notification_volume_override": "false", "info_notification_volume_type": "constant", "thread_id": "SZM7GDPI2VI3F:UWZ6FR5T2KG7U:going-oncall", "title": "You are going on call in 7 minutes for schedule joey test", "type": "oncall.info"}, "token": "dqWWqPS8SvOno1TEE_ZBlX:APA91bHW3hB2sXfKHxxrZ6BITyju3gzBfOHyh1drqndc1U8_b-F89JIfPEsaZvXL-uQd0vpJA8LHifEUCZKb_frk-wbTAwbgk92_0a1DvUKdgNcntK-O85MUDRuf6bWhE9NRGIv58tt5"}
```
## 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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