Merge pull request #4135 from IgorA100/patch-184549

Fix: When executing "setTouchAction: function(el)" check if the element is passed to the function (panzoom.js)

web/js/panzoom.js

@@ -175,6 +175,7 @@ var zmPanZoom = {
   },
 
   setTouchAction: function(el) {
+    if (!el) return;
     const currentScale = el.getScale().toFixed(1);
     if (currentScale == 1) {
       el.setOptions({touchAction: 'manipulation'});