Question Encountered A Server Error For Xengallery

Sorry for creating so many threads. Just wanted to know what is the error all about and what can I do to rectify it. This has come up 4 times today.

Code:

Error Info
ErrorException: Fatal Error: Maximum execution time of 30 seconds exceeded - library/sonnb/XenGallery/Model/PhotoFilter.php:75
Generated By: terence_fdes, 58 minutes ago
Stack Trace
#0 [internal function]: XenForo_Application::handleFatalError()
#1 {main}
Request State
array(3) {
  ["url"] => string(82) "http://www.techenclave.com/community/gallery/albums/malaysia-vistas.8608/add-photo"
  ["_GET"] => array(0) {
  }
  ["_POST"] => array(20) {
    ["photo_allow_view"] => string(8) "everyone"
    ["photo_allow_view_username"] => string(0) ""
    ["photo_allow_comment"] => string(8) "everyone"
    ["photo_allow_comment_username"] => string(0) ""
    ["content_title"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["content_description"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["content_people"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["content_location"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["location_lat"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["location_lng"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["video_key"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["video_type"] => array(9) {
      [5699] => string(0) ""
      [5700] => string(0) ""
      [5701] => string(0) ""
      [5702] => string(0) ""
      [5703] => string(0) ""
      [5704] => string(0) ""
      [5706] => string(0) ""
      [5707] => string(0) ""
      [5708] => string(0) ""
    }
    ["content_type"] => array(9) {
      [5699] => string(5) "photo"
      [5700] => string(5) "photo"
      [5701] => string(5) "photo"
      [5702] => string(5) "photo"
      [5703] => string(5) "photo"
      [5704] => string(5) "photo"
      [5706] => string(5) "photo"
      [5707] => string(5) "photo"
      [5708] => string(5) "photo"
    }
    ["delete"] => array(9) {
      [0] => string(0) ""
      [1] => string(0) ""
      [2] => string(0) ""
      [3] => string(0) ""
      [4] => string(0) ""
      [5] => string(0) ""
      [6] => string(0) ""
      [7] => string(0) ""
      [8] => string(0) ""
    }
    ["cover_content_id"] => string(1) "0"
    ["content_data_hash"] => string(32) "fd23b20027762b04849bbbcc6380a0a7"
    ["_xfRequestUri"] => string(56) "/community/gallery/albums/malaysia-vistas.8608/add-photo"
    ["_xfNoRedirect"] => string(1) "1"
    ["_xfToken"] => string(8) "********"
    ["_xfResponseType"] => string(4) "json"
  }
}