Fatal error: Uncaught Error: Interface 'PhpCsFixer\RuleSet\RuleSetInterface' not found in /home/vivliari/public_html/presta-validator/vendor/friendsofphp/php-cs-fixer/src/RuleSet/RuleSet.php:29 Stack trace: #0 {main} thrown in /home/vivliari/public_html/presta-validator/vendor/friendsofphp/php-cs-fixer/src/RuleSet/RuleSet.php on line 29