Hi,

One of our build processes failed because it tried to download this library as a dependency instead of symfony/polyfill-ctype. It happened because this library is marked as a replacement for Symfony's ctype polyfill lib in packagist.
The solution that helped us was just updating the composer on our deployment servers. But still, it would be better to remove the symfony/polyfill-ctype from the replace section in composer.json file.

Thanks,
Nadir.