Bugs encountered when cloning a module with a submodule

[Luminite9]

I encountered some problems when I'm trying to use the online service to clone my repository skscope. Here is the error message:

---

Waiting for build to start...
Picked Git content provider.
Cloning into '/tmp/repo2dockeri6matnuh'...
HEAD is now at 0a0dc68 Merge pull request #98 from abess-team/create-pull-request/patch
Submodule 'pybind11' ([email protected]:pybind/pybind11.git) registered for path 'pybind11'
Cloning into '/tmp/repo2dockeri6matnuh/pybind11'...
error: cannot run ssh: No such file or directory
fatal: unable to fork
fatal: clone of '[email protected]:pybind/pybind11.git' into submodule path '/tmp/repo2dockeri6matnuh/pybind11' failed
Failed to clone 'pybind11'. Retry scheduled
Cloning into '/tmp/repo2dockeri6matnuh/pybind11'...
error: cannot run ssh: No such file or directory
fatal: unable to fork
fatal: clone of '[email protected]:pybind/pybind11.git' into submodule path '/tmp/repo2dockeri6matnuh/pybind11' failed
Failed to clone 'pybind11' a second time, aborting
Error during build: Command '['git', 'submodule', 'update', '--init', '--recursive']' returned non-zero exit status 1.Error in event stream: Error

---

To reproduce the message, just enter "https://github.com/abess-team/skscope" in GitHub repository name or URL and enter "master" in Git ref (branch, tag, or commit) and click Launch.
From the description, it seems that it goes wrong when cloning pybind11, I just want to know how to deal with that?
Thanks!

[welcome]

Thank you for opening your first issue in this project! Engagement like this is essential for open source projects! 🤗

If you haven't done so already, check out Jupyter's Code of Conduct. Also, please try to follow the issue template as it helps other other community members to contribute more effectively.

You can meet the other Jovyans by joining our Discourse forum. There is also an intro thread there where you can stop by and say Hi! 👋

Welcome to the Jupyter community! 🎉