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# Bug: Deployment fails after file rename (Astro)

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Pascal Polleunus (@ppo) · 2025-01-08

I renamed a file using: `git mv filename.mdx filename.md`
It's a file in an [Astro content collection](https://docs.astro.build/en/guides/content-collections/): `/content/blog/filename.mdx`
The build works fine locally. I tried using `vercel --prod`, not working.
I guess it's a cache problem. I tried "push everything" in the project settings › data cache but it doesn't solve the problem.
I renamed the file to `.mdx` and `vercel --prod`, and it worked.
I renamed back to `.md` and `vercel --prod`, and it failed again.

Error:
```
[vite]: Rollup failed to resolve import "astro:content-layer-deferred-module?astro%3Acontent-layer-deferred-module=&fileName=src%2Fcontent%2Fblog%2Ffilename.mdx&astroContentModuleFlag=true" from "/vercel/path0/.astro/content-modules.mjs".
```


Pauline P. Narvas (@pawlean) · 2025-01-29

Hey, Pascal! 

Thanks for being patient with us! Could you share a [minimal reproducible example](https://vercel.com/guides/creating-a-minimal-reproducible-example) for us?