Cannot add dependency

[halbGefressen]

Hi, when I try to add this project as a dependency, I get this error:

Error: Error during execution of `cargo metadata`:     Updating git repository `https://github.com/yewstack/yewtify`
    Updating git submodule `git@github.com:vuetifyjs/vuetify.git`
error: failed to get `yewtify` as a dependency of package `bot-webui v0.1.0 (/home/christian/Projekte/Rust/discord-bot-web/bot-webui)`

Caused by:
  failed to load source for dependency `yewtify`

Caused by:
  Unable to update https://github.com/yewstack/yewtify

Caused by:
  failed to update submodule `vuetify`

Caused by:
  failed to fetch submodule `vuetify` from git@github.com:vuetifyjs/vuetify.git

Caused by:
  failed to authenticate when downloading repository

  * attempted ssh-agent authentication, but no usernames succeeded: `git`

  if the git CLI succeeds then `net.git-fetch-with-cli` may help here
  https://doc.rust-lang.org/cargo/reference/config.html#netgit-fetch-with-cli

Caused by:
  error authenticating: no auth sock variable; class=Ssh (23)

I don't know if this is a cargo-specific bug or if it has something to do with your repository. Tried forking it and using my own repo, but to no success. The fixes I found in the output or on the internet didn't help.

System: Arch Linux x86_64, Kernel 5.9.14, latest git