Install exception due to https://api.github.com/graphql rate limiting

[godadada]

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Script App\Composer::success handling the post-create-project-cmd event terminated with an exception

[Composer\Downloader\TransportException]
The "https://api.github.com/graphql" file could not be downloaded: failed to
open stream: Connection refused

[aimeos]

Seems like there was a problem with Github at the time of your installation.
Nevertheless, your installation may work. If not, try to install it again from scratch.