Error in exception handler: Trying to get property of non-object (View: /var/www/web/survey/www/laravel/app/views/layouts/master.blade.php) (View: /var/www/web/survey/www/laravel/app/views/layouts/master.blade.php) in /var/www/web/survey/www/laravel/app/storage/views/19e88dacbd9ce0e1244e0dc9b94689ae:31