0049564: JS 'forEach' error when invoicing a sales transaction

diff --git a/web/com.practicsbs.saftpt.retail/js/hooks/presyncreceipt.js b/web/com.practicsbs.saftpt.retail/js/hooks/presyncreceipt.js
index 0b846a7..8e6edc0 100644
--- a/web/com.practicsbs.saftpt.retail/js/hooks/presyncreceipt.js
+++ b/web/com.practicsbs.saftpt.retail/js/hooks/presyncreceipt.js
@@ -30,9 +30,17 @@ OB.UTIL.HookManager.registerHook('OBPOS_PreSyncReceipt', async function(
       let isManualDocument = order.get('saftrIsManual');
       // Is Return:
       let qty = 0;
-      enyo.forEach(order.get('lines').models, function(line) {
-        qty = OB.DEC.add(qty, line.get('qty'));
-      });
+      if (
+        order.get('lines') &&
+        order.get('lines').models &&
+        order.get('lines').models.length > 0
+      ) {
+        order.get('lines').models.forEach(line => {
+          qty = OB.DEC.add(qty, line.get('qty'));
+        });
+      } else {
+        OB.error('No lines in invoiced ticket');
+      }
       let isReturn = qty <= 0;
 
       // Manual Documents Customization: