Fatal error: Uncaught Error: Interface 'ProxyManager\Signature\Exception\ExceptionInterface' not found in /home/soh-works/www/Stepup_test/vendor/ocramius/proxy-manager/src/ProxyManager/Signature/Exception/InvalidSignatureException.php:16 Stack trace: #0 {main} thrown in /home/soh-works/www/Stepup_test/vendor/ocramius/proxy-manager/src/ProxyManager/Signature/Exception/InvalidSignatureException.php on line 16