diff --git a/modern/src/initialize.js b/modern/src/initialize.js
index 8dc862bc..73d08ae8 100644
--- a/modern/src/initialize.js
+++ b/modern/src/initialize.js
@@ -23,6 +23,9 @@ async function loadImage(imgUrl) {
     img.addEventListener("load", () => {
       resolve(img);
     });
+    img.addEventListener("error", e => {
+      reject(e);
+    });
     img.src = imgUrl;
   });
 }