Fatal error: Uncaught Error: Interface 'ProxyManager\Signature\SignatureCheckerInterface' not found in /home/soh-works/www/Stepup_test/vendor/ocramius/proxy-manager/src/ProxyManager/Signature/SignatureChecker.php:17 Stack trace: #0 {main} thrown in /home/soh-works/www/Stepup_test/vendor/ocramius/proxy-manager/src/ProxyManager/Signature/SignatureChecker.php on line 17