fix

frontend/src/scripts/index.js

@@ -110,7 +110,7 @@ class Main extends Component {
     render(){
         let photos_gallery = [];
         let photos_carousel = [];
-        if(gallery_open){
+        if(this.state.gallery_open){
             for (const photo of this.state.photos[gallery_open]){
                 photos_gallery.push({
                     src: photo.thumbnail,