Redis Error - LOADING Redis is loading the dataset in memory

[torbentschechne]

Hello, I have more and more servers with this error:

381719 FastCGI sent in stderr: "PHP message: RedisException: LOADING Redis is loading the dataset in memory in /sites/domain/files/wp-content/object-cache.php:418
Stack trace:
#0 /sites/domain/files/wp-content/object-cache.php(418): Redis->ping()
#1 /sites/domain/files/wp-content/object-cache.php(155): WP_Object_Cache->__construct(true)
#2 /sites/domain/files/wp-includes/load.php(701): wp_cache_init()
#3 /sites/domain/files/wp-settings.php(131): wp_start_object_cache()
#4 /sites/domain/files/wp-config.php(100): require_once('/sites/domain...')
#5 /sites/domain/files/wp-load.php(37): require_once('/sites/domain...')
#6 /sites/domain/files/wp-blog-header.php(13): require_once('/sites/domain...')
#7 /sites/domain/files/index.php(17): require('/sites/domain...')

What can I do about it? The only solution I found so far is, to define define( 'WP_REDIS_DISABLED', true );, but this can't be right...