Fatal error: Uncaught Error: Class 'SebastianBergmann\Diff\InvalidArgumentException' not found in /home/clienti2020/public_html/novaballet.it/vendor/sebastian/diff/src/Exception/ConfigurationException.php:13 Stack trace: #0 {main} thrown in /home/clienti2020/public_html/novaballet.it/vendor/sebastian/diff/src/Exception/ConfigurationException.php on line 13