fix build

widget/controllers/widget.feed.controller.js

@@ -513,19 +513,23 @@
         }, 300);
       });
 
-      WidgetFeed.getThumbnail = function(video) {
-        var isTablet = $rootScope.deviceWidth >= 768;
-        const layoutName = WidgetFeed.data.design.itemListLayout
-        const { maxres, standard, high ,medium } = video.snippet.thumbnails;
-        if (isTablet) {
-          return maxres?.url || standard?.url || high?.url || medium?.url;
-        }
-        if (layoutName === "List_Layout_3") {
-          return standard?.url || high?.url || medium?.url;
-        }
-        return video.snippet.thumbnails.medium.url;
-
-      };
+  WidgetFeed.getThumbnail = function(video) {
+  var isTablet = $rootScope.deviceWidth >= 768;
+  const layoutName = WidgetFeed.data.design.itemListLayout;
+  const thumbnails = video.snippet.thumbnails;
+  const maxres = thumbnails.maxres ? thumbnails.maxres.url : null;
+  const standard = thumbnails.standard ? thumbnails.standard.url : null;
+  const high = thumbnails.high ? thumbnails.high.url : null;
+  const medium = thumbnails.medium ? thumbnails.medium.url : null;
+
+  if (isTablet) {
+    return maxres || standard || high || medium;
+  }
+  if (layoutName === "List_Layout_3") {
+    return standard || high || medium;
+  }
+  return medium;
+};
 
       WidgetFeed.bookmark = function($event, video) {
         $event.stopImmediatePropagation();