Fatal error: Uncaught Error: Class 'Symfony\Component\Config\Definition\Builder\VariableNodeDefinition' not found in /home1/heyerarc/public_html/updates/concrete5-8.5.5_remote_updater/concrete/vendor/symfony/config/Tests/Fixtures/Builder/VariableNodeDefinition.php:16 Stack trace: #0 {main} thrown in /home1/heyerarc/public_html/updates/concrete5-8.5.5_remote_updater/concrete/vendor/symfony/config/Tests/Fixtures/Builder/VariableNodeDefinition.php on line 16