How to fix deployment issues with tailwind v3

I’m experiencing consistent deployment issues across multiple v0 projects. Even when attempting to redeploy past versions that previously worked, deployments now fail inside v0 with build errors. However, these same past versions still deploy correctly on Vercel.

When I request v0 to generate a fix, it produces a solution that allows deployment but breaks the UI and all styles and layout are destroyed in production, even though the preview UI remains fully intact. This has happened across multiple projects and has been reported by other users as well.

In one case, I was able to fix the issue by upgrading Tailwind from v3 to v4, but this solution does not work for all projects. In most cases, v0’s fixes result in broken styling, making deployments unusable.

Here’s an example of the error I consistently encounter:

'“

An error occurred during deployment. Please fix:

Running build in Washington, D.C., USA (East) – iad1 Build machine configuration: 4 cores, 8 GB Retrieving list of deployment files… Downloading 440 deployment files… Restored build cache from previous deployment (DisGQcibwZZp7jJDpbG8banH7aiT) Running “vercel build” Vercel CLI 48.1.6 Running “install” command: bun install… bun install v1.2.23 (cf136713) Resolving dependencies Resolved, downloaded and extracted [1961] error: GET https://registry.npmjs.org/@radix-ui%2Freact-sheet - 404 error: /react-sheet@^1.0.4 failed to resolve Error: Command “bun install” exited with 1

“

Update to Tailwind CSS v4.1.9 currently tailwindcss": “^3.4.17”, this is causing this styling error, even on past deployments and the only fix i found was to update to CSS v4.1.9 heres a prompt to help fix this issue, it worked for me. ‘Make sure theres no Tailwind CSS version mismatch, if there isnt then we are going to update tailwind to v4.1.9, and make sure install tailwind v4 packages needed, and make sure if tailwind v4 needs to revamp any code to function do so move any postcss plugins to seperate tailwindcss/postcss files and create any required new css imports, make sure to add "@tailwindcss/postcss": "4.1.9" to devDependencies and remove autoprefixer (no longer needed in v4) if we have it and update "tailwindcss" to "4.1.9" (locked version to prevent future mismatches) and add any v4 css imports needed by using "tailwindcss"; into any global.css files.” Hope this helps!

Thank You. but that is not fixing it as well.

What tailwind version where you on? I had this issue on 3 projects and that seemed to fix them all.

It was version 3. but it seems to be fixed now after couple tries. it looks like you approach was the solution but i had duplicate file for css. but it solved now.

Glad I can help hopefully they patch v3 soon!

Eric - you're the best! Thank you so much for helping out here