我正在学习本教程 - link
在这里，您需要访问一个名为 charting_library 的私有存储库，我就是这样做的。
如文档中所述，The Charting Library is free, but its code is in the private repository on GitHub. Make sure that you have access to this repository: https://github.com/tradingview/charting_library/. 我没有看到任何错误，但我可以在这里看到代码。
所以按照文档，当我运行这个
git clone https://github.com/tradingview/charting-library-tutorial.git
repo 被克隆，没问题。但是当我运行下一个命令时
git submodule update --init --recursive
我收到以下错误
Cloning into 'C:/coding/charting-library-tutorial/charting_library_clonned_data'...
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git@github.com:tradingview/charting_library.git' into submodule path 'C:/coding/charting-library-tutorial/charting_library_clonned_data' failed
Failed to clone 'charting_library_clonned_data'. Retry scheduled
Cloning into 'C:/coding/charting-library-tutorial/charting_library_clonned_data'...
Host key verification failed.
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
fatal: clone of 'git@github.com:tradingview/charting_library.git' into submodule path 'C:/coding/charting-library-tutorial/charting_library_clonned_data' failed
Failed to clone 'charting_library_clonned_data' a second time, aborting
我在这里做错了什么？