Yarn add dev @chainlink/contracts error

[VatsalSharma12]

While running yarn add --dev @chainlink/contracts it shows error : Permissions denied:Public Key

Error:

Exit code: 128
Command: git
Arguments: ls-remote --tags --heads ssh://git@github.com/ricmoo/ens-normalize.js.git
Directory: /Users/vatsalsharma/hardhat-fund-me-fcc/hardhat-fund-me-fcc
Output:
git@github.com: Permission denied (publickey).
fatal: Could not read from remote repository.

Error image

What is the error ?

[machinesr]

Try run

yarn add --dev @chainlink/contracts