Fatal error: Uncaught Error: Interface "Symfony\Component\Mercure\Jwt\TokenProviderInterface" not found in /home/elcrestweb/public_html/concrete/vendor/symfony/mercure/src/Jwt/StaticTokenProvider.php:21 Stack trace: #0 {main} thrown in /home/elcrestweb/public_html/concrete/vendor/symfony/mercure/src/Jwt/StaticTokenProvider.php on line 21