🐛 [Frontend] Shop: Fix thumbnail (#7335)

Author: odeimaiz

services/static-webserver/client/source/class/osparc/vipMarket/LicensedItemListItem.js

@@ -172,7 +172,9 @@ qx.Class.define("osparc.vipMarket.LicensedItemListItem", {
     },
 
     __applyThumbnail: function(value) {
-      this.getChildControl("thumbnail").setSource(value);
+      if (value) {
+        this.getChildControl("thumbnail").setSource(value);
+      }
     },
 
     __applyDisplayName: function(value) {
@@ -184,6 +186,9 @@ qx.Class.define("osparc.vipMarket.LicensedItemListItem", {
     },
 
     __applySeats: function(seats) {
+      if (seats === null || seats.length === 0) {
+        return;
+      }
       const nSeatsLabel = this.getChildControl("n-seats");
       const nSeats = osparc.store.LicensedItems.seatsToNSeats(seats);
       if (nSeats) {