require_once('../functions/prefs.php'); was needed to use getPref

src/validate.php

@@ -107,9 +107,10 @@
    require_once('../config/config.php');
    require_once('../src/load_prefs.php');
    require_once('../functions/page_header.php');
+   require_once('../functions/prefs.php');
 
    // Set up the language
    // i18n.php was included by auth.php
    global $username, $data_dir;
    set_up_language(getPref($data_dir, $username, 'language'));
-?>
+?>