I'm trying to install Flarum and when I enter the command git clone git@github.com:flarum/flarum
, I get this:
```
Cloning into 'flarum'...
Warning: Permanently added the RSA host key for IP address '...' to the list of known hosts.
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
```
Suggestions?