ui: add error feedback for avatar upload

packages/ui-default/pages/home_settings.page.ts

@@ -52,6 +52,7 @@ export default new NamedPage('home_account', () => {
     }
   });
   $confirm.on('click', async () => {
+    try {
       if ($type.val() === 'upload') {
         const formData = new FormData();
         formData.append('file', $file[0].files[0]);
@@ -65,5 +66,8 @@ export default new NamedPage('home_account', () => {
       }
       await delay(800);
       window.location.reload();
+    } catch (e) {
+      Notification.error(e.message);
+    }
   });
 });