diff --git a/app/models/attachment.js b/app/models/attachment.js
index 86892cad..1eaa0201 100644
--- a/app/models/attachment.js
+++ b/app/models/attachment.js
@@ -95,8 +95,12 @@ export function addModel(dbAdapter) {
           result.image[variant] = {
             w: entry.w,
             h: entry.h,
-            ext: entry.url.split('.').pop(),
+            ext: entry.url?.split('.').pop(),
           };
+
+          if (!entry.url) {
+            debug(`no URL for image size ${variant} of attachment ${this.id}`, this._imageSizes);
+          }
         }
       }
 
diff --git a/package.json b/package.json
index 050ddf32..fa9c30e0 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "name": "freefeed-server",
   "description": "FreeFeed is an open source FriendFeed clone (yes, it is free and open!) based on Pepyatka open-source FriendFeed clone (yes, that one is also free and open). Basically, this is a social real-time feed aggregator that allows you to share cute kittens, coordinate upcoming events, discuss any other cool stuff on the Internet or setup a private Pepyatka instance in your company.",
   "homepage": "https://freefeed.net",
-  "version": "2.23.2",
+  "version": "2.23.3",
   "private": true,
   "scripts": {
     "start": "cross-env TZ=UTC yarn babel index.js",