Final commit (be carefull and change the service worker/manifest to adapt to your server)

assets/JsStuff/toolbox.js

@@ -20,7 +20,7 @@ function removeFromIndexDB(storename, key) {
             console.log(`object deleted : ${request.result}`);
         }
         request.onerror = (err) => {
-            console.error(`Error to delete object: ${err}`)
+            console.error(`Error to delete object: ${err}`);
         }
     }
 }