15 Minute Sales export is not being triggered

This scenario is pretty simple : when Day close occurs on the POS we send a 15 Minute Sales Export.

Defect - It does appear that we are sending the exports but they are failing on an exception noted in the auto-notification :

Store: 00198 - Northwest Arkansas Mall
Date: 12/10/2019 12:00:00 AM
Export Function: 15 Minute Sales
Exception(s): Value cannot be null.
Parameter name: uriString