object(SiteMapSerializerManager)#9 (5) {
  ["serializer"]=>
  array(0) {
  }
  ["extension:protected"]=>
  string(3) "txt"
  ["ready:private"]=>
  bool(false)
  ["default"]=>
  string(4) "html"
  ["components"]=>
  array(4) {
    ["html"]=>
    string(15) "serializer.html"
    ["xml"]=>
    string(14) "serializer.xml"
    ["hax"]=>
    string(14) "serializer.hax"
    ["compress"]=>
    string(19) "serializer.compress"
  }
}
string(3) "txt"
<br />
<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /usr/local/exp_dev/class/core/siteMapSerializerManager.class.php:34) in <b>/usr/local/exp_dev/exp.class.php</b> on line <b>334</b><br />
<h1>Error 500</h1> <b>Internal Error