nextjs - 💡(How to fix) Fix [Bug] Sitemap renders as HTML instead of XML when alternates are included [1 comments, 2 participants]

TL;DR

• The issue with the sitemap.xml being wrapped in an HTML document instead of being served as XML when alternates are enabled in Next.js v16.0.3 may be resolved by adjusting the sitemap.ts configuration or the server settings to properly handle XML responses.

Guidance

• Review the sitemap.ts file to ensure that the alternates option is correctly configured and that the XML response is properly set.
• Verify that the server is configured to serve XML files with the correct MIME type (application/xml) to prevent them from being wrapped in HTML.
• Check if there are any middleware or plugins that might be interfering with the XML response and adjust their configurations accordingly.
• Test the sitemap.xml generation with a minimal configuration to isolate if the issue is related to a specific setting or the overall setup.

Example

No specific code example can be provided without more details on the sitemap.ts configuration and the server setup.

Notes

The exact solution depends on the specifics of the Next.js configuration, server settings, and any middleware or plugins in use. Without more detailed information about these aspects, it's challenging to provide a precise fix.

Recommendation

• Apply workaround: Adjust the sitemap.ts configuration and server settings to ensure proper handling of XML responses, as the root cause seems related to how the server or Next.js handles XML output when alternates are enabled.