modify view

api/static/script_util.js

@@ -126,7 +126,7 @@ $(".next").click(function () {
   result = xhr.send(objstr);
 });
 
-const slide_button = document.querySelector('.next');
+const slide_button = document.querySelector('#send_slide');
 $("#send_slide").click(function () {
   slide_button.setAttribute('disabled', '');
   setTimeout(function () {