Fatal error: Uncaught Error: Interface 'CoreInterfaces\Core\Authentication\AuthInterface' not found in /home/demo4ev/public_html/RAUSHAN/vendor/apimatic/core/src/Authentication/Auth.php:17 Stack trace: #0 {main} thrown in /home/demo4ev/public_html/RAUSHAN/vendor/apimatic/core/src/Authentication/Auth.php on line 17