org\guzaba\framework\kernel\exceptions\errorException

PHP error:
"exec() has been disabled for security reasons"

On line 43 in file .framework/filesystem/classes/filesystem.php.
#0 [internal function]: org\guzaba\framework\kernel\classes\kernel->error_handler(2, 'exec() has been...', '/home/bnap/publ...', 43, Array)
#1 /home/bnap/public_html/framework/filesystem/classes/filesystem.php(43): exec('file -bi './cms...', Array, 0)
#2 /home/bnap/public_html/cms/files/controllers/view_file.php(109): org\guzaba\framework\filesystem\classes\filesystem::file_mime_type('./cms/user_file...', true)
#3 [internal function]: org\guzaba\cms\files\controllers\view_file->download()
#4 /home/bnap/public_html/framework/mvc/classes/executor.php(246): call_user_func_array(Array, Array)
#5 /home/bnap/public_html/framework/mvc/classes/executor.php(107): org\guzaba\framework\mvc\classes\executor->execute()
#6 /home/bnap/public_html/framework/mvc/classes/executor.php(87): org\guzaba\framework\mvc\classes\executor->main_process()
#7 /home/bnap/public_html/framework/mvc/exceptions/internalRedirect.php(66): org\guzaba\framework\mvc\classes\executor->__construct(Object(org\guzaba\framework\mvc\classes\environment))
#8 /home/bnap/public_html/framework/mvc/classes/controller.php(448): org\guzaba\framework\mvc\exceptions\InternalRedirect->__construct(Object(org\guzaba\framework\mvc\classes\environment))
#9 /home/bnap/public_html/cms/files/controllers/view_file.php(84): org\guzaba\framework\mvc\classes\controller->_internal_redirect(Object(org\guzaba\framework\mvc\classes\environment))
#10 [internal function]: org\guzaba\cms\files\controllers\view_file->main()
#11 /home/bnap/public_html/framework/mvc/classes/executor.php(246): call_user_func_array(Array, Array)
#12 /home/bnap/public_html/framework/mvc/classes/executor.php(107): org\guzaba\framework\mvc\classes\executor->execute()
#13 /home/bnap/public_html/framework/mvc/classes/executor.php(87): org\guzaba\framework\mvc\classes\executor->main_process()
#14 /home/bnap/public_html/framework/runlevels/classes/init_1.php(197): org\guzaba\framework\mvc\classes\executor->__construct(Object(org\guzaba\framework\mvc\classes\environment), true)
#15 /home/bnap/public_html/framework/kernel/classes/kernel.php(112): org\guzaba\framework\runlevels\classes\init_1::execute()
#16 /home/bnap/public_html/index.php(52): org\guzaba\framework\kernel\classes\kernel->execute()
#17 {main}


REQUEST: /p/files/c/view_file/id/544/

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