Sitemap Generation Error Fix in Lovable

I need help generating a sitemap with lovable - I keep getting an error 404 page when it says it generated the sitemap. Here's my prompt:

"Generate the sitemap to include all seeded words for SEO indexing. I want to use dynamic routing for the sitemap and pages. Can you help me set up a 'Sitemap Index' route that points to sub-sitemaps based on my seeded data?"



Lovable response:

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The sitemap function already exists but needs to include all 15 languages (it currently only has 12). Let me also check the vercel.json for the rewrites configuration.

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vercel.json
The Vercel routing is already set up correctly. I just need to update the sitemap edge function to include all 15 seeded languages (adding ja, zh, hi).

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1 edit made
The sitemap index is now generating correctly with all 15 languages. Here's the summary:

Sitemap Architecture:

Index: /sitemap.xml → Lists all child sitemaps
Static: /sitemap-static.xml → Homepage, language pages, manifesto, contact
Dynamic: /sitemap-{lang}-{type}-{page}.xml → Words for each language
Total Coverage (~1.32M URLs):

661,413 words × 2 page types (synonyms + rhymes) = ~1.32M URLs
Split across ~30 child sitemaps (45,000 URLs each max)
Routing via Vercel:

Already configured in vercel.json with regex patterns
All sitemap requests are proxied to the Supabase edge function

The site is AIThesaurus.io I have roughly 600,000 pages I want indexed based on seeded words in 15 languages.

I just want quick help fixing this it is like 1/2 hr project for someone who knows what they're doing.

Please type the word "Synonym" as the first part of your message so I know it is not an autoresponse. All auto responses will be hidden and ignored.