3399 Android7.1 代码无法同步

按照教程下载了3399 android7.1的SDK,按照步骤解压和git add remote后,想同步最新代码,发现无法同步,提示如下:
Permission denied (publickey).
fatal: Could not read from remote repository.

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

这是什么意思?还要权限吗?有人遇到过吗?

好吧,已经解决了。SDK自带的gitlab地址是不对的,但教程里写的步骤是git remote rm origin,应该改为git remote rm gitlab,然后重新添加gitlab:
git remote add gitlab https://gitlab.com/TeeFirefly/FireNow-Nougat.git

感谢