Why am I getting ERR_NAME_NOT_RESOLVED when I add a site to my multisite installation? [closed]

Upon further investigation, I found that the answer to my problem involved one simple, yet easy to overlook fix: I needed to add this new site to my hosts file.

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)