Cron fails when Location is null

[sekjal]

Describe the bug
The minute-cron does not complete if a Client's Location is not set.

To Reproduce
Steps to reproduce the behavior:

1. Register a Client without specifying a Location name or ID
2. Wait for the cron to run
3. Notice the cronjob crash at line 335

Expected behavior
Null locations should use some kind of default, baseline behavior

Additional context
Add any other context about the problem here.