Error 500

Undefined index: title

exception 'ErrorException' with message 'Undefined index: title' in /home/u187877/evropa-tur.com/www/app/controllers/frontend/publication.php:42
Stack trace:
#0 /home/u187877/evropa-tur.com/www/app/controllers/frontend/publication.php(42): app_exception_error_handler(8, 'Undefined index...', '/home/u187877/e...', 42, Array)
#1 /home/u187877/new_framework/system/controller/factory.php(28): App\Controllers\Frontend\Publication->__default()
#2 /home/u187877/new_framework/system/application.php(258): System\Controller\Factory::Create('frontend\public...', '__default', Array)
#3 /home/u187877/new_framework/system/application.php(238): System\Application->controller('frontend\public...', '__default', Array)
#4 /home/u187877/new_framework/boot.php(22): System\Application->dispatch()
#5 /home/u187877/evropa-tur.com/www/app/boot.php(11): Framework::Run('App')
#6 /home/u187877/evropa-tur.com/www/index.php(5): require_once('/home/u187877/e...')
#7 {main}

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