Drupal 8 Multi Site Install Problem

I downloaded drupal 8 and performed an install with any noticanle incident, after completing the install I attempted to use drush to install 4 additional sites, I added thte sites to the sites .php file. However I am having various problmes with the sites. Two of the sites load ok, another one loads with this screen “The website encountered an unexpected error. Please try again later.” and a plain white screen. Another of them loads with what is mostly just text and plain text links, but no theme/colors etc. The onlt thing that I have noticed that is abnormal is that in my sites/default/files dir I have 3 config_*** dirs. I am not adverse to beginning the entire process over gain, I simply would liek to know the exact steps I msut take to get all of the sites installed and working correctly. I really don't understand d8 all that well but I feel like there is some config issue9s) going on. Any and all help would be very welcomed. I would really like to get these sites up and runing. Also can anyone please advise the correct owner and persmission for the sites/files dir?