no Step 6 do Gesior da este erro, para load os Monster.
Warning: domdocument::domdocument() expects at least 1 parameter, 0 given in C:\xampp\htdocs\pot\OTS_MonstersList.php on line 61
Fatal error: Call to undefined method domdocument::load() in C:\xampp\htdocs\pot\OTS_MonstersList.php on line 62