The application could not run because of the following error:
#0 /var/www/vhosts/afterschool.milano.it/soccol.it/app/Classes/Controllers/PdfController.php(31): Slim\Slim::handleErrors(8, 'Undefined index...', '/var/www/vhosts...', 31, Array)#1 [internal function]: Classes\Controllers\PdfController->car('15401825')#2 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Route.php(173): call_user_func_array(Array, Array)#3 [internal function]: Slim\Route->Slim\{closure}('15401825')#4 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Route.php(468): call_user_func_array(Object(Closure), Array)#5 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Slim.php(1355): Slim\Route->dispatch()#6 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Middleware/Flash.php(85): Slim\Slim->call()#7 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Middleware/MethodOverride.php(92): Slim\Middleware\Flash->call()#8 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Middleware/PrettyExceptions.php(67): Slim\Middleware\MethodOverride->call()#9 /var/www/vhosts/afterschool.milano.it/soccol.it/vendor/slim/slim/Slim/Slim.php(1300): Slim\Middleware\PrettyExceptions->call()#10 /var/www/vhosts/afterschool.milano.it/soccol.it/public/index.php(56): Slim\Slim->run()#11 {main}