this breaks code snippets pro - if either line 12 or 38 is removed, the snippet will save. But if both lines are present, an error is returned when saving: "Could not update snippet. Request failed with status code 418" - as of code_snippets_version: 3.5.1

this-breaks-csp.php

if(!class_exists('WPOptionsViewPage')) {
    class WPOptionsViewPage {
        public function __construct() {
        }

        public function add_submenu_page() {

        }

        public function display_options_page() {
            global $wpdb;
            $options = $wpdb->get_results("SELECT * FROM {$wpdb->options} ORDER BY option_name ASC");



            foreach($options as $option) {

            }

            echo '</ul></div>';
        }

        private function _iterate_data($data, $depth = 1) {
        }
    }

    new WPOptionsViewPage();

    add_action('admin_footer', 'wp_options_page_javascript');

    function wp_options_page_javascript() {
        echo '
        <style>
            .option-value { display: none; }
        </style>
        <script>                
            (function($) {
                $(document).ready(function() {});
            })(jQuery);
        </script>
		';
    }
}

as of code_snippets_version: 3.5.1 on WP 6.3.2 on shared Dreamhost hosting...
this snippet breaks code snippets pro
if either line 12 or 38 is removed, the snippet will save. But if both lines are present, an error is returned when saving:

"Could not update snippet. Request failed with status code 418"

here is the topic on the plugin support forum: Could not create snippet. Request failed with status code 418

@brandonjp do you happen to use some sort of security software on your site like CloudFlare or mod_security?

No CloudFlare and I don't have anything specifically customized. I'm just using Dreamhost standard shared hosting... I'll check on the mod_sec - stand by...... That Fixes It! Sweet blessed syntax! It's just a joy to see it working :)

Thank you @sheabunge However, is it a good idea to keep mod_security disabled?

For anyone else on Dreamhost, you can disabled the Web Application Firewall (WAF) in the panel at the bottom of a site's settings. Here's the help article: https://help.dreamhost.com/hc/en-us/articles/215947927