diff --git a/html/src/app.js b/html/src/app.js
index 149b3cdf..4e2c23bb 100644
--- a/html/src/app.js
+++ b/html/src/app.js
@@ -5440,13 +5440,13 @@ speechSynthesis.getVoices();
 
     var extractVariantVersion = (url) => {
         if (!url) {
-            return '';
+            return '0';
         }
         try {
             const params = new URLSearchParams(new URL(url).search);
             return params.get('v');
         } catch {
-            return '';
+            return '0';
         }
     };