往github上推代码虽然添加了ssh公钥，依然报权限不足
1.错误详情
注册了一个新的github账号，添加完ssh公钥之后，push的时候，依然报权限不足，
具体信息：
Agent admitted failure to sign using the key.
Permission denied (publickey).
fatal: Could not read from remote repository.
Please make sure you have the correct access rights
and the repository exists.
2.解决办法
- 打开终端
- 输入下面的命令
ssh-add
- 然后输入密码，回车之后重新推送代码。成功！！！
