document.addEventListener("DOMContentLoaded", () => {
          if (Array.from(document.scripts).find(script => script.src.includes('rocket-loader.min.js'))) {
            const alert = document.createElement('div');
            alert.className = 'p-4 mb-4 text-sm text-red-800 rounded-lg bg-red-50 dark:bg-gray-800 dark:text-red-400 mt-8 mx-8';
            alert.innerHTML = `
              <strong>Error in site configuration:</strong>
                It looks like ${window.location.hostname} has been incorrectly configured in Cloudflare. This may lead to unexpected behavior or issues with the page loading. If you are the owner of this site, please refer to <a href="https://docs.gitbook.com/published-documentation/custom-domain/configure-dns#are-you-using-cloudflare" class="underline">GitBook's documentation</a> for steps to fix the problem.
              `;

            document.body.prepend(alert);
          }
        });