Fatal error: Uncaught Error: Interface "Http\Message\Authentication" not found in /home/custom/public_html/katiekarr/vendor/php-http/message/src/Authentication/RequestConditional.php:14 Stack trace: #0 {main} thrown in /home/custom/public_html/katiekarr/vendor/php-http/message/src/Authentication/RequestConditional.php on line 14