fix: Sitemap generation fails silently during build without terminating the process #478
Description
🐛 The bug
When using dynamic URLs as sitemap sources during the prerendering process, if the sitemap source URL returns an error (e.g., 404), the sitemap generation fails but the build process continues without termination. This results in a production deployment without a sitemap, which is a critical SEO issue.
🛠️ To reproduce
https://stackblitz.com/edit/nuxt-starter-epfdv8ey
🌈 Expected behavior
The build process should fail and terminate when sitemap generation encounters errors, preventing deployment of incomplete builds.
ℹ️ Additional context
No response