Supercache stopped caching, timestamp etc

Hello.

This morning I saw that supercache stopped caching anything on one website, and all was right on another one (same server, same php-fpm config).

I spent 6+ hours trying to fix, no way. I read all I could find, including here.

I compared all data between the broken site and the working site, didn;t find any problem. Permissions, paths, config, all seem OK.

One point that I immediately saw: There is NOthing in /cache/supercache, there should be a directory named site.name. There is just an empty index file.

I removed plugin, (and autoptimize..) deleted directories, reinstalled supercache, tested the time stamp = FAILED. Tried various config options = No way, NO file is cached. NO sitename directory in /cache/supercache.

There weren’t any plugin or core updates yesterday, just a minor Centos8 update (without reboot), but as only one site is concerned, seems it isn’t connected.

Well I don’t know what to do, apart considering using another plugin, but I use this supercache on a few other sites, no problem. Site is a big one, 100.000 pages a day. Without cache, hum hum… ??

If somebody could help… Thank you.

Config.wp

define(‘WP_CACHE’, true);

define( ‘WPCACHEHOME’, ‘/home/[domain]/public_html/wp-content/plugins/wp-super-cache/’ );

if ( ! defined( ‘ABSPATH’ ) ) {
define( ‘ABSPATH’, __DIR__ . ‘/’ );
}

require_once(ABSPATH.’wp-settings.php’);