pb with update wordpress

Hi,
I’ve got a big problem with the wordpress update.
I don’t know anything about php but they say :

Declaration of WCS_Query::get_endpoint_title($endpoint) should be compatible with WC_Query::get_endpoint_title($endpoint, $action = '')

and here is the file. 

Thanks a lot for your help because my website doesnt display anymore, so it's a big problem. 
Thanks a lot for your help

<?php
/**
WooCommerce Subscriptions Query Handler
*
@version 2.0
@author Prospress
/
class WCS_Query extends WC_Query {

[rest of paste removed by moderator]

• This topic was modified 5 years, 3 months ago by Steven Stern (sterndata).
• This topic was modified 5 years, 3 months ago by Steven Stern (sterndata).