after upgrading to Commerce 1.3 the error log gets: Fatal error: Declaration of Twig\NodeVisitor\MacroAutoImportNodeVisitor::enterNode(Twig\Node\Node $node, Twig\Environment $env): Twig\Node\Node must be compatible with Twig\NodeVisitor\NodeVisitorInterface::enterNode(Twig_NodeInterface $node, Twig\Environment $env) in /www/core/**components**/commerce/vendor/twig/twig/src/NodeVisitor/MacroAutoImportNodeVisitor.php on line 34
Commerce 1.3 updated the internal twig version from v1 to v3. Perhaps you have something else running on the site that is now conflicting? Is there a stack trace of the error that contains a different component path?
I think the error log has caught something but for security reasons I’d better PM you with the log details. My opinion, it is Fred editor but I have not updated it yet nevertheless it does offer an update but I am just stuck with the idea that on the dev site it’s working with the same set of Extras.