Better logs to help diagnose the frequent 502 errors

[baogorek]

These 502 issues happen frequently:

Automatically resolved api.policyengine.org incident
Monitor: api.policyengine.org
Cause: Status 502
Length: 3 minutes
Checked URL: GET https://api.policyengine.org/
Response:
502 Server Error
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⚠️ Incident
🌐 Monitor
Incident started July 16th at 8:26:43 AM

But currently, there is not sufficient logging within the API to diagnose. This issue is about getting the logging in place.