Bug fix for stock item tracking API

InvenTree/stock/api.py

@@ -1018,6 +1018,9 @@ class StockTrackingList(generics.ListAPIView):
         for item in data:
             deltas = item['deltas']
 
+            if not deltas:
+                deltas = {}
+
             # Add location detail
             if 'location' in deltas:
                 try:

InvenTree/templates/js/stock.js

@@ -1017,6 +1017,11 @@ function loadStockTrackingTable(table, options) {
         formatter: function(details, row, index, field) {
             var html = `<table class='table table-condensed' id='tracking-table-${row.pk}'>`;
 
+            if (!details) {
+                html += '</table>';
+                return html;
+            }
+
             // Location information
             if (details.location) {