Unity 2020. add package from git url failed

[CheAbdullah]

[Package Manager Window] Cannot perform upm operation: Unable to add package [git@github.com:fsstudio-team/ZeroSimROSUnity.git]: Error when executing git command. Host key verification failed. fatal: Could not read from remote repository.

Select Add Package From Git URL... and enter git@github.com:fsstudio-team/ZeroSimROSUnity.git. {https://github.com/fsstudio-team/ZeroSimROSUnity}

[anqitongxue]

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[CheAbdullah]

[Package Manager Window] Cannot perform upm operation: Unable to add package [git@github.com:fsstudio-team/ZeroSimROSUnity.git]: Error when executing git command. git@github.com: Permission denied (publickey). fatal: Could not read from remote repository.

Please make sure you have the correct access rights and the repository exists.

is this link working? git@github.com:fsstudio-team/ZeroSimROSUnity.git

[CheAbdullah]

DOWNLOAD THIS .JSON. INSTALL FROM FILE##

https://raw.githubusercontent.com/fsstudio-team/ZeroSimROSUnity/master/package.json

[Rive4]

Hello,

I tried in both ways but I am still having problems to import it. Using package.json file it appears in package manager that I installed the package, but it does not import anything.

EDIT: Finally I could solve it by using the GIT https URL and it worked :)