PHP 8: Fatal error: Uncaught ValueError: No stream arrays were passed in vendor/react/event-loop/src/StreamSelectLoop.php:290

[holtkamp]

Steps to reproduce on a PHP 8 environment:

git clone https://github.com/dpovshed/octopus
cd octopus
composer install
php application.php https://www.rocktherankings.com/sitemap.xml

Note that with a "local" example, the error does not occur:

php application.php examples/sitemap-wiki.xml

[holtkamp]

Attempt to fix using https://github.com/dpovshed/octopus/commit/31058ecdaafe888fa0d18fa2ff689578b5828dd7, note that:

• this breaks the build on PHP 8, due to https://github.com/reactphp/filesystem/issues/89#issuecomment-765488573
• local sitemap files are not loaded properly any more

[holtkamp]

This was fixed after https://github.com/reactphp/filesystem/issues/89#issuecomment-873673188