Uncaught Error: Class ‘Redis’ errors on a site I’ve transfered to new hosting

I’ve been given a site that I need to install on my server. The site was made by someone else and it seems to have redis installed.

I get errors such as (paths altered/truncated in the error msg for privacy reasons):

Fatal error: Uncaught Error: Class ‘Redis’ not found in
wp-contentobject-cache.php:732 Stack trace: #0
wp-contentobject-cache.php(171): WP_Object_Cache->__construct() #1
wp-includesload.php(638): wp_cache_init() #2 wp-settings.php(131):
wp_start_object_cache() #3 wp-config.php(94):
require_once(‘path…’) #4 wp-load.php(37):
require_once(‘pathgree…’) #5 wp-blog-header.php(13):
require_once(‘path…’) #6 index.php(17): require(‘path…’)
#7 {main} thrown in wp-contentobject-cache.php on line 732

What’s really odd is that they didn’t give me the WP codebase, just the wp-content folders with theme, plugins, uploads.

So the entire wp codebase, wp-config etc are all defaults that I’ve just obtained from the current latest version at WordPress.org.

So if the wp-config is as default, how can some redis like system be coming into play? I’ve never had this issue before and transferred 101 pre-build WP sites between servers.

Can anyone assist ?