Multisite images broken

I have a very old but up to date multisite installation where all the images are broken on the sub sites, but fine on the main site, which is in root. The actual images are located at, for example,

/public_html/wp-content/blogs.dir/7/files/2010/06/file.jpg

but wordpress outputs it as:

https://sub.domain.com/files/2010/06/file.jpg

and it gives a 404 error, and I can’t view or edit the images in the Media Library.

This is htaccess

RewriteEngine On
RewriteBase /
RewriteRule ^index\.php$ - [L]

# uploaded files
RewriteRule ^files/(.+) wp-includes/ms-files.php?file=$1 [L]

# add a trailing slash to /wp-admin
RewriteRule ^wp-admin$ wp-admin/ [R=301,L]

RewriteCond %{REQUEST_FILENAME} -f [OR]
RewriteCond %{REQUEST_FILENAME} -d
RewriteRule ^ - [L]
RewriteRule ^(wp-(content|admin|includes).*) $1 [L]
RewriteRule ^(.*\.php)$ $1 [L]
RewriteRule . index.php [L]

This is wp-config

define('MULTISITE', true);
define('SUBDOMAIN_INSTALL', true);
define('DOMAIN_CURRENT_SITE', 'www.mymainsite.com');
define('PATH_CURRENT_SITE', '/');
define('SITE_ID_CURRENT_SITE', 1);
define('BLOG_ID_CURRENT_SITE', 1);

I’ve read lots of threads on this but if htaccess and wp-config are correct I’m not sure what I’m supposed to do to fix it.

Web server is nginx/1.17.5

• This topic was modified 5 years, 1 month ago by patung.