Skip to content

How to fix the `unable to resolve dependency tree` PostCSS and Tailwind issue in Next.js

How to solve the `unable to resolve dependency tree` error while installing Tailwind in a Next.js website

While setting up a new Next.js project with Tailwind I ran into an issue.

This issue might just be a temporary issue due to configuration problems and libraries versions, but I'm writing this in case someone stumbles on it.

I ran:

npm install tailwindcss postcss-preset-env postcss-flexbugs-fixes

In other words, PostCSS 8.1.13 was required but Next installed 8.1.7.

So I ran

npm install tailwindcss@latest postcss@latest
postcss-preset-env postcss-flexbugs-fixes

and it worked!

→ Download my free Next.js Handbook!

THE VALLEY OF CODE

THE WEB DEVELOPER's MANUAL

You might be interested in those things I do:

  • Learn to code in THE VALLEY OF CODE, your your web development manual
  • Find a ton of Web Development projects to learn modern tech stacks in practice in THE VALLEY OF CODE PRO
  • I wrote 16 books for beginner software developers, DOWNLOAD THEM NOW
  • Every year I organize a hands-on cohort course coding BOOTCAMP to teach you how to build a complex, modern Web Application in practice (next edition February-March-April-May 2024)
  • Learn how to start a solopreneur business on the Internet with SOLO LAB (next edition in 2024)
  • Find me on X

Related posts that talk about next: