Fatal error: Uncaught TypeError: Project::__construct(): Argument #1 ($key) must be of type string, null given, called in /home/bakkerhoveniers/domains/bakkerhoveniers.nl/public_html/werkzaamheid-1.php on line 16 and defined in /home/bakkerhoveniers/domains/bakkerhoveniers.nl/PHP/Classes/Model/Project.php:16 Stack trace: #0 /home/bakkerhoveniers/domains/bakkerhoveniers.nl/public_html/werkzaamheid-1.php(16): Project->__construct() #1 {main} thrown in /home/bakkerhoveniers/domains/bakkerhoveniers.nl/PHP/Classes/Model/Project.php on line 16