PHP Error undefined function is_plugin_active_for_network()

When Litespeed plugin is active, it causes a PHP error when attempting to update any site plugin remotely. Appears to be an undefined function in plugin file. Occuring across several different domains. Deactiviating Litespeed plugin solves issue. Remote management is IWP (https://infinitewp.com/ )

Occuring in Litespeed Plugin Versions 1.8.3 and 1.9

Error and stack trace below:

PHP Fatal error occurred: Uncaught Error: Call to undefined function is_plugin_active_for_network()
in /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-cache-admin-display.class.php:75 Stack trace:

#0 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-cache-admin-display.class.php(944): LiteSpeed_Cache_Admin_Display->__construct()
#1 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-cache-admin.class.php(33): LiteSpeed_Cache_Admin_Display::get_instance()
#2 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-cache-admin.class.php(278): LiteSpeed_Cache_Admin->__construct()
#3 /home/$account/$domain.com/wp-content/plugins/litespeed-cache/inc/litespeed-cache.class.php(158): LiteSpeed_Cache_Admin::get_instance()
#4 /home/$account/$domain.com/wp-includes/class-wp-hook.php(286): LiteSpeed_Cache->init(”)
#5 /home/$account/$domain.com/wp in /home/$account/$domain.com/wp-content/plugins/litespeed-cache/admin/litespeed-cache-admin-display.class.php on line 75.