diff --git a/assets/javascripts/app.js b/assets/javascripts/app.js
index 9cbf155..570c8c0 100644
--- a/assets/javascripts/app.js
+++ b/assets/javascripts/app.js
@@ -301,7 +301,7 @@
     $('.navbar-toggle').click(function(){
       $('.navbar-expand-lg').toggleClass('width-controler')
     })
-    if( $('div[data-pp="1000"]').html().trim() !== ''){
+    if( $('div[data-pp="1000"]').length != 0 && $('div[data-pp="1000"]').html().trim() !== ''){
       $('.black-screen').addClass('active');
     }
     $('.close-btn').click(function() {