after my upgrade to 18.104.22.168 i have one site that is showing a blank index page. i assume that you are talking about editing
i did not see these settings in this file so i added
max_connections = 500
max_user_connections = 500
and then restarted mysql
i checked the site and it is still white pages did i miss something?
i have 3 out of 4 sites running and they are all ok its just the one