sometimes I get this error.
XenForo_Exception: gfnkraken_no_compressor_available - library/GFNKraken/ImageCompressor/Abstract.php:38
Generated By: name, 21 minutes ago
Stack Trace
#0 /home/mypath/library/GFNKraken/Extend/XenGallery/Model/File.php(31): GFNKraken_ImageCompressor_Abstract::compress('/tmp/phpl201XQ', 1)
#1 /home/mypath/library/XenGallery/ControllerPublic/File.php(175): GFNKraken_Extend_XenGallery_Model_File->insertUploadedAttachmentData(Object(XenForo_Upload), 1, Array)
#2 /home/mypath/library/XenForo/FrontController.php(347): XenGallery_ControllerPublic_File->actionDoUpload()
#3 /home/mypath/library/XenForo/FrontController.php(134): XenForo_FrontController->dispatch(Object(XenForo_RouteMatch))
#4 /home/mypath/index.php(13): XenForo_FrontController->run()
#5 {main}
Request State
array(3) {
  ["url"] => string(148) "
https://www.site.com/media/files/do...xengallery_media&upload_type=image&key=images"
  ["_GET"] => array(4) {
  ["hash"] => string(32) "e7d1fe4c857da2326d8997cc63312ff5"
  ["content_type"] => string(16) "xengallery_media"
  ["upload_type"] => string(5) "image"
  ["key"] => string(6) "images"
  }
  ["_POST"] => array(7) {
  ["Filename"] => string(26) "mayweather vs pacquiao.gif"
  ["_xfResponseType"] => string(4) "json"
  ["_xfNoRedirect"] => string(1) "1"
  ["content_data"] => array(1) {
  ["category_id"] => string(1) "2"
  }
  ["_xfSessionId"] => string(32) "9934a318589937036ad5cca1a0d67f05"
  ["_xfToken"] => string(8) "********"
  ["Upload"] => string(12) "Submit Query"
  }
}