White Screen of Death (WSD)

[adminxs]

Hi There!
Yes, it is 100% verified that PHP OPcache extension is installed.
The copied object-cache.php into my WordPress content directory (wp-content/)
causing the White Screen of Death (WSD).
PHP Version is 7.2.31 runs php-fpm on NGINX
WP version 5.4.2
Any ideas on how to make it work finally?
Cheers.