Fatal error: Uncaught Error: Call to undefined function isLoggedIn() in /var/www/html/domopieki_tmp/app/views/header.php:23 Stack trace: #0 /var/www/html/domopieki_tmp/app/views/employee_list.php(1): include() #1 {main} thrown in /var/www/html/domopieki_tmp/app/views/header.php on line 23