Fixing Ditto and Wayfinder 404s on Nested URLs

When nested URLs are enabled, the whole routing chain has to agree on how links are built. If Ditto and Wayfinder start outputting links that return 404 while manually typed paths work, the issue is usually a mismatch between URL generation and URL resolution.

This is not just a menu bug. It is a routing consistency bug.

What to verify

• Check the nested URL setting and the site’s actual rewrite rules.
• Confirm that snippets generate links using the same assumptions as the router.
• Look for stale cache after changing alias or nested URL settings.
• Make sure the full parent path is generated exactly as the router expects.

If manually entering the full nested path returns 200 but snippet-generated links return 404, the generated link format is the thing to fix. That usually means revisiting snippet configuration, path generation logic, or alias handling rather than the content itself.

Nested URLs are reliable only when the tree, the link builder, and the rewrite layer all agree.