{"id":181,"hash":"9c215cf44e6c80ba129a98474781ea246bde6e7e8b9f040fb6701d980a51f0c6","pattern":"Cannot build frontend using Vite, TailwindCSS with PostCSS","full_message":"10:04:32 PM [vite] Internal server error: [postcss] It looks like you're trying to use tailwindcss directly as a PostCSS plugin. The PostCSS plugin has moved to a separate package, so to continue using Tailwind CSS with PostCSS you'll need to install @tailwindcss/postcss > and update your PostCSS configuration.\nPlugin: vite:css\nFile: ...\n\n10:04:32 PM [vite] Internal server error: [postcss] Missing > \"./components\" specifier in \"tailwindcss\" package\nPlugin: vite:css\nFile: ...\n\nI developed my chat app so I wanted everything updated so I removed node_modules then npm install and build then the above error keeps coming. It has to be something related to dependencies because it was working before I remove node_modules.\n\nnpm cache clean --force\n\nnpm install -D tailwindcss autoprefixer postcss\n\nI uninstalled them and did the above commands but it keeps giving me above error. What is the relation of PostCSS to TailwindCSS why are both dependent on each other?\n\nnpx tailwindcss init\n\nalso it says\n\nnpm error could not determine executable to run\nnpm error A complete log of this run can be found in: /home/amosmurmu/.npm/_logs/2025-01-23T15_39_50_870Z-debug-0.log\n\nI also tried to change Node.js version using NVM but it gives structured clone error so its not Node.js or NPX or NPM.","ecosystem":"npm","package_name":"reactjs","package_version":null,"solution":"TailwindCSS v3\nThe installation of TailwindCSS v3 and v4 is different. You were expecting the v3 installation, but v4 is the new latest version. For v3 installation, use:\n\nnpm install -D tailwindcss@3\n\nOnce this is done, the other steps remain unchanged:\n\nGet started with Tailwind CSS - TailwindCSS v3 Docs\n\nTailwindCSS v4\nTo install TailwindCSS v4, please refer to the updated installation and upgrade guides.\n\nGet started with Tailwind CSS - TailwindCSS v4 Docs\nUpgrading your Tailwind CSS projects from v3 to v4 - TailwindCSS v4 Docs\n\nSome related question for v4 upgrade:\n\nHow to use TailwindCSS v4 & Vite without PostCSS\nSeparated PostCSS plugin for TailwindCSS\nRemoved @tailwind directives\nAutomatic Source Detection from TailwindCSS v4 (instead of content property)\n\nAdding an external source or a package from within node_modules for detection\n\nDeprecated: Sass, Less and Stylus preprocessors support\n\n@import \"tailwindcss\"; does not work when used in a file with an .scss extension\nSass and TailwindCSS v4 don't work together, but can be used separately\nHow to use SCSS and TailwindCSS separately but side by side\n\nProblem installing TailwindCSS with Vite, after \"npx tailwindcss init -p\" command\nError Installing Shadcn UI and Tailwind CSS in React.js Project with Vite\n\nI see you're using v4. The use of tailwind.config.js has been removed, and instead, you can use a simple CSS-first configuration. However, it's possible to use the legacy JavaScript-based configuration via the @config directive.\n\nNew CSS-first configuration option in v4 (@theme, @custom-variant, @utility)\nTailwindCSS v4 is backwards compatible with v3 (@config)\nHow to can create (functional) utilities with @utility without plugin\n\nTailwindCSS v4 with Vite\nnpm uninstall postcss autoprefixer\nnpm install tailwindcss @tailwindcss/vite\n\nUpgrade guide: new Vite plugin introduced - TailwindCSS v3 to v4\nGetting started with Vite - TailwindCSS v4 Docs\n[vite] Internal server error: Failed to load PostCSS config\n\nTailwindCSS v4 with PostCSS\nnpm uninstall autoprefixer\nnpm install tailwindcss @tailwindcss/postcss postcss\n\nUpgrade guide: separated PostCSS plugin introduced - TailwindCSS v3 to v4\nGetting started with PostCSS - TailwindCSS v4 Docs\n[postcss] It looks like you're trying to use tailwindcss directly as a PostCSS plugin","confidence":0.95,"source":"stackoverflow","source_url":"https://stackoverflow.com/questions/79383705/cannot-build-frontend-using-vite-tailwindcss-with-postcss","votes":28,"created_at":"2026-04-19T04:41:28.223688+00:00","updated_at":"2026-04-19T04:51:09.964113+00:00"}