Fatal error: Uncaught Error: Class 'Http\Discovery\ClassDiscovery' not found in /var/www/html/ng-crm/yiiapp/vendor/php-http/discovery/src/HttpClientDiscovery.php:15 Stack trace: #0 {main} thrown in /var/www/html/ng-crm/yiiapp/vendor/php-http/discovery/src/HttpClientDiscovery.php on line 15