update

src/Database/Database.php

@@ -66,9 +66,8 @@ class Database
      */
     public function query_count($sql, $params = null)
     {
-        $stmt = self::query($sql, $params);
-
-        return $stmt->rowCount();
+        $stmt = $this->query($sql, $params);
+        return (int) $stmt->fetchColumn();
     }
 
     /**