Fatal error: Uncaught Error: Class 'Hamcrest\DiagnosingMatcher' not found in /home/clienti2020/public_html/novaballet.it/vendor/hamcrest/hamcrest-php/hamcrest/Hamcrest/Core/IsInstanceOf.php:13 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/hamcrest/hamcrest-php/hamcrest/Hamcrest/Core/IsInstanceOf.php on line 13