Object cache could not be enabled

Hello. Thank you for great plugin. My system is Debian Buster (10). I’ve installed php-redis through debian repositories.

Here is my diagnostics;

Status: Disabled
Client: 
Drop-in: Invalid
Redis Extension: 4.2.0
Predis Client: 1.1.1
PHP Version: 7.3.9-1~deb10u1
Multisite: No
WP_CACHE_KEY_SALT: "SALT_KEY"
WP_REDIS_PASSWORD: "****************************************************************************************************************************************************************************************************************************************************************"
Plugins: 
 - Akismet Anti-Spam v4.1 by Automattic (Inactive)
 - All-in-One WP Migration v6.73 by ServMask (Active)
 - Classic Editor v1.3 by WordPress Contributors (Active)
 - Hello Dolly v1.6 by Matt Mullenweg (Inactive)
 - LayerSlider WP v5.6.10 by Kreatura Media (Active)
 - Nginx Helper v2.1.0 by rtCamp (Active)
 - Redis Object Cache v1.5.0 by Till Krüss (Active)
 - WPBakery Visual Composer v4.12.1 by Michael M - WPBakery.com (Active)
 - Yoast SEO v9.2.1 by Team Yoast (Active)

I get Object cache could not be enabled. when I try to enable the cache.

I’ve check my redis server with redis-cli. It works perfectly. I’ve also MONITOR through redis-cli to catch if php is hitting the server but get nothing.

I’ve also enabled debug and display errors to get a hint what’s going on. But ended up with no success.

Edit: I’ve just located some errors on nginx log;

2019/10/25 14:57:40 [error] 440#440: *1189 FastCGI sent in stderr: "PHP message: PHP Warning: copy(/srv/www/sites/www.example.com/public/wp-content/object-cache.php): failed to open stream: No such file or directory in /srv/www/sites/www.example.com/public/wp-admin/includes/class-wp-filesystem-direct.php on line 247" while reading response header from upstream, client: ::ffff:195.174.215.70, server: www.example.com, request: "GET /wp-admin/options-general.php?page=redis-cache&action=enable-cache&_wpnonce=401a3fdb8d HTTP/2.0", upstream: "fastcgi://unix:/run/php7.3-fpm-example_com.sock:", host: "www.example.com", referrer: "https://www.example.com/wp-admin/options-general.php?page=redis-cache"

• This topic was modified 6 years, 5 months ago by antsomers. Reason: Add debug information
• This topic was modified 6 years, 5 months ago by antsomers. Reason: Add error log