this is failing because the nostr url points to @Laeserin ๐ป๐ฆ who doesn't have a git repository with the identifier Alexandria. try @Silberengel
a good way of finding the right nostr url to use is to view
as you can select a repo and copy the clone url via the green 'clone' button
GitWorkshop.dev
Decentralized github alternative over Nostr