fix: do not check for payment terms details for return invoices.

erpnext/accounts/report/accounts_receivable/accounts_receivable.py

@@ -505,7 +505,8 @@ def get_payment_terms(self, row):
 			from `tab{row.voucher_type}` si, `tabPayment Schedule` ps
 			where
 				si.name = ps.parent and
-				si.name = %s
+				si.name = %s and
+				si.is_return = 0
 			order by ps.paid_amount desc, due_date
 		""",
 			row.voucher_no,