raschid

open file kirby/vendor/getkirby/toolkit/lib/url.php
change this (around line 397):

-----------------------------------------------------------------------------
public static function unIdn($url) {

    if(!function_exists('idn_to_ascii')) return $url;

    // disassemble the URL, convert the domain name and reassemble
    $variant = defined('INTL_IDNA_VARIANT_UTS46') ? INTL_IDNA_VARIANT_UTS46 : INTL_IDNA_VARIANT_2003;