Check Exist before Rendering Posters/Banners

frontend/src/Artist/ArtistBanner.js

@@ -11,12 +11,14 @@ function findBanner(images) {
 
 function getBannerUrl(banner, size) {
   if (banner) {
+    if (banner.url.contains('lastWrite')) {
     // Remove protocol
       let url = banner.url.replace(/^https?:/, '');
       url = url.replace('banner.jpg', `banner-${size}.jpg`);
 
       return url;
     }
+  }
 }
 
 class ArtistBanner extends Component {

frontend/src/Artist/ArtistPoster.js

@@ -11,12 +11,14 @@ function findPoster(images) {
 
 function getPosterUrl(poster, size) {
   if (poster) {
+    if (poster.url.contains('lastWrite')) {
       // Remove protocol
       let url = poster.url.replace(/^https?:/, '');
       url = url.replace('poster.jpg', `poster-${size}.jpg`);
 
       return url;
     }
+  }
 }
 
 class ArtistPoster extends Component {