"Permission denied (publickey)" error message in Terminal

Hello, when I try to clone the example lab repository, I am getting the following error message in my Terminal:

Flaminia@MacBook-Air-3 ~ % git clone -b example git@gitlab.epfl.ch:lamp/students-repositories-fall-2020/cs210-ftrinca.git cs210-example Cloning into 'cs210-example'... git@gitlab.epfl.ch: Permission denied (publickey). fatal: Could not read from remote repository.

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

I have checked that my SSH key is correctly uploaded and even attempted to change it but this was not a solution. Could you please advise on what I can do to fix this issue. Thank you

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information