Wordpress на NGINX открывается белая страница. Что делать?

map $uri $blogname{
~^(?P/[^/]+/)files/(.*) $blogpath ;
}

map $blogname $blogid{
default -999;

#Ref: wordpress.org/extend/plugins/nginx-helper
#include /var/www/wordpress/wp-content/plugins/nginx-helper/map.conf ;
}

server {
server_name domain;

root /srv/domain/;
index index.php;
error_log /var/log/nginx/domain.error.log;

location ~ ^(/[^/]+/)?files/(.+) {
try_files /wp-content/blogs.dir/$blogid/files/$2 /wp-includes/ms-files.php?file=$2 ;
access_log off; log_not_found off; expires max;
}

#avoid php readfile()
location ^~ /blogs.dir {
internal;
alias /srv/domain/htdocs/wp-content/blogs.dir ;
access_log off; log_not_found off; expires max;
}

if (!-e $request_filename) {
rewrite /wp-admin$ $scheme://$host$uri/ permanent;
rewrite ^(/[^/]+)?(/wp-.*) $2 last;
rewrite ^(/[^/]+)?(/.*\.php) $2 last;
}

location / {
try_files $uri $uri/ /index.php?$args ;
}

location ~ \.php$ {
fastcgi_pass unix:/var/run/php/php7.2-fpm.sock;
try_files $uri =404;
include fastcgi_params;
}

#add some rules for static content expiry-headers here
}