Doesn't work with S3FS

Hi! The patch in #2 works but it might create a fatal error in the cases where the file is not present.

This for us happens for example when working locally with a database exported from production, but without having the files.

This updated patch adds a try/catch to prevent the fatal error.

The idea is taken from another patch in the related issue https://www.drupal.org/project/imagick/issues/3018081#comment-14021982 🐛 Using a remote file scheme does not work Needs review

Here is an updated patch based on patch in #5 and fixing a PHP warning.