Parse error for use function PatchworkCallReroutingvalidate;

Hi, when I try to activate the klaviyo plugin on my wordpress site, I get this message:

Plugin could not be activated because it triggered a fatal error.
Parse error: syntax error, unexpected ‘function’ (T_FUNCTION), expecting identifier (T_STRING) or (T_NS_SEPARATOR) in /home4/catgenie/public_html/wp-content/plugins/klaviyo/includes/class-wck-api.php on line 13

When I edit klaviyo/includes/class-wck-api.php line 13 says:

use function PatchworkCallReroutingvalidate;

Not sure where to go from here. Do I need to install a plugin with the function ‘PatchworkCallReroutingvalidate;’? Please help!