Use nextParameter instead of addParameter and manually counting where possible.

public-legacy/settings/data.php

@@ -54,7 +54,7 @@ function db_to_zip(
 
     try {
         $stmt = $dbConn->prepare(sprintf('SELECT %s FROM msz_%s WHERE %s = ?', implode(', ', $fields), $baseName, $userIdField));
-        $stmt->addParameter(1, $userId);
+        $stmt->nextParameter($userId);
         $stmt->execute();
         $result = $stmt->getResult();