确切的错误是

Incorrect credentials for repository at github.com:SarahSzabo/StellarOPUSConverter.git

这看起来不像https URL(可能是SSH URL，带有〜/.ssh/config 文件)

That does not look like an https URL (it could be an SSH one, with an ~/.ssh/config file)

确保复制https URL:

Make sure to copy the https URL:

https://github.com/SarahSzabo/StellarOPUSConverter