Why I'm getting "django.db.utils.OperationalError: server closed the connection unexpectedly" during some operations in Ansible Tower

Solution Verified - Updated -

Issue

I'm getting the following error in Ansible Tower logs

django.db.utils.OperationalError: server closed the connection unexpectedly
This probably means the server terminated abnormally before or while
processing the request.

This problem is usually produced when Tower executes a big operation against the database, like an inventory synchronization from a different source or something like that.

Environment

Ansible Tower + External Postgres

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