a server is down?

[zeta-00]

hello there, i'm a nix user here and i tried to install the emacs package indium from nixpkgs, but for some reason it is causing an error to be thrown, i'm guessing it's because a server is down? here's the the error message from the terminal:

building '/nix/store/64j9c70c8l817rnkrdhx9dddl87gs55c-json-process-client-422606a.drv'...
exporting https://gitea.petton.fr/nico/json-process-client.git (rev 422606a7bf08d13646e3db4f6c2bddb69bd61dec) into /nix/store/hg5k2f6153600j5jxswxf9aqm4q61kj5-json-process-client-422606a
Initialized empty Git repository in /nix/store/hg5k2f6153600j5jxswxf9aqm4q61kj5-json-process-client-422606a/.git/
fatal: unable to access 'https://gitea.petton.fr/nico/json-process-client.git/': Failed to connect to gitea.petton.fr port 443: Connection timed out