Pending payments created but invoice not approved

Overview: GVSU has an invoice that is still in the open state but has all of its pending payments created. None of the order encumbrances are released and now the invoice will not approve.

Steps to Reproduce:

1. Log into GVSU
2. Create order with 31 lines
3. All with the same Fund and expense class
4. Open order
5. Create invoice for the order with all 31 POLs connected
6. Click "Approve and pay" action

Expected Results: Invoice is approved and paid successfully

Actual Results: Duplicate key error is shown and invoice is not set to approved. However, all Pending payments are created and none of the encumbrances are released

Additional Information: Logs available on request. Ask Dennis to share via slack
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