Ошибка 500. Ошибка приложения

В файле: /var/www/webapps/x1db/controllers/FileController.php:71

Трассировка:

#0 /var/www/library/X1/MVC/Control.php(104): X1DB\Controller\FileController->download()
#1 /var/www/library/X1/MVC/Control.php(69): X1\MVC\Control->tryAction('download')
#2 /var/www/library/X1/MVC/Controller.php(60): X1\MVC\Control->run(Object(X1\MVC\Request))
#3 /var/www/library/X1/MVC/Dispatcher.php(84): X1\MVC\Controller->run(Object(X1\MVC\Request))
#4 /var/www/library/X1/App/FrontController.php(144): X1\MVC\Dispatcher->dispatch()
#5 /var/www/public/index.php(36): X1\App\FrontController->run()
#6 {main}

Последний sql запрос:

select  "SYS_BLOBS".* from "SYS_BLOBS" 
where 
 mod(coalesce("SYS_BLOBS"."SYS_STATE",0),2)=0
  and  ("SYS_BLOBS"."SYS_GUID"= ?)