Fatal error: Uncaught Error: Interface 'Http\Client\Common\Plugin' not found in /home/benjamincb/demos/acdg-site/vendor/php-http/client-common/src/Plugin/HeaderDefaultsPlugin.php:18 Stack trace: #0 {main} thrown in /home/benjamincb/demos/acdg-site/vendor/php-http/client-common/src/Plugin/HeaderDefaultsPlugin.php on line 18