Modification du sélecteur

view/adminhtml/web/js/productimages_dropzone.js

@@ -54,10 +54,10 @@ require([
         // Setup the buttons for all transfers
         // The "add files" button doesn't need to be setup because the config
         // `clickable` has already been specified.
-        document.querySelector("#actions .start").onclick = function() {
+        document.querySelector(".actions .start").onclick = function() {
             myDropzone.enqueueFiles(myDropzone.getFilesWithStatus(Dropzone.ADDED));
         };
-        document.querySelector("#actions .cancel").onclick = function() {
+        document.querySelector(".actions .cancel").onclick = function() {
             myDropzone.removeAllFiles(true);
         };
     });