Fix Access Control Allow Origin cannot contain more than one origin

Issue :IOS, MacOS

Browser: Safari

Software: WordPress , Ionic Framework

Solutions:

Add the code below to your current theme function file.

    add_action('rest_api_init', function() {
        remove_filter('rest_pre_serve_request', 'rest_send_cors_headers');
        add_filter('rest_pre_serve_request', function($value) {
            header('Access-Control-Allow-Origin: *'); // Or specify allowed origins
            header('Access-Control-Allow-Methods: GET, POST, OPTIONS, PUT, DELETE');
            header('Access-Control-Allow-Credentials: true');
            return $value;
        });
    });