nslExcludeUrlFromFixedRedirect.php

<?php

function excludeUrlFromFixedRedirect($fixedRedirectUrl, $provider) {
    $pageWhereButtonWasClicked = NSL\Persistent\Persistent::get('redirect');
    $excluded_url              = 'https://example.com/checkout';
    if ($pageWhereButtonWasClicked && strpos($pageWhereButtonWasClicked, $excluded_url) !== false) {
        return false;
    }

    return $fixedRedirectUrl;
}
//excludes the URL from Fixed redirect url - for Login, when login happens with the Google provider
add_filter('google_login_redirect_url', 'excludeUrlFromFixedRedirect', 10, 2);
//excludes the URL from Fixed redirect url - for Register, when login happens with the Google provider
add_filter('google_register_redirect_url', 'excludeUrlFromFixedRedirect', 10, 2);