Tailwindcss: Could Not Determine Executable To Run [Fix]

With the release of Tailwind version 4 [↗], came with it some changes. One that can lead to the error below when you run npx tailwindcss:

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01: npm error could not determine executable to run
02: npm error A complete log of this run can be found in: /home/<user_name>/.npm/_logs/2025-10-09T12_36_15_002Z-debug-0.log

This error is due to the fact that installing tailwindcss the old way i.e `npm install tailwindcss only pulls in the code but not the Tailwind CLI.

You need to install that too, altogether, you now have:

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$ npm install tailwindcss @tailwindcss/cli

Or, alternatively you can specify an older version of Tailwind to install:

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$ npm install tailwindcss@3

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