fixed cancel error

public/apiwp/cancel.php

@@ -1,6 +1,4 @@
 <?php
-ini_set('display_errors', 1);
-error_reporting(E_ALL);
 require_once __DIR__ . '/bootstrap.php';
 require_once dirname(__DIR__) . '/include/event_waitlist.php';
 require_once dirname(__DIR__) . '/include/event_mailer.php';
@@ -84,10 +82,12 @@ if (!$booking) {
     }
 }
 
+if (!function_exists('e')) {
     function e($v): string
     {
         return htmlspecialchars((string) $v, ENT_QUOTES, 'UTF-8');
     }
+}
 ?>
 <!doctype html>
 <html lang="it">

public/apiwp/confirm.php

@@ -59,10 +59,12 @@ if (!$booking) {
     }
 }
 
+if (!function_exists('e')) {
     function e($v): string
     {
         return htmlspecialchars((string) $v, ENT_QUOTES, 'UTF-8');
     }
+}
 ?>
 <!doctype html>
 <html lang="it">