Error when trying to promote component to component library

Overview

I was trying to promote a component to the component library and it failed due to a PHP error. I don't have steps to reproduce this since refreshing the page fixed this. However, I wanted to document it here in case that this rings bells.

Symfony\Component\HttpKernel\Exception\MethodNotAllowedHttpException: No route found for "PATCH
/xb/api/config/js_component/": Method Not Allowed (Allow: GET, HEAD, POST) in Symfony \Component\HttpKernel\EventListener\RouterListener->onKernelRequest() (line 153 of /var/www/html/vendor/symfony/http-
kernel/EventListener/RouterListener.php)

Proposed resolution

User interface changes