jQuery doesn’t work in my php snippet

this not perfect way to write inline java script , write java script into document ready event

jQuerydocument ).ready(function() {
    jQuery( ".wc-proceed-to-checkout" ).css("display", "none");
});

404 Not Found

Not Found

The requested URL was not found on this server.

Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.