Troubleshooting

Next.js 15+ with Turbopack

If you see a warning like Module not found: Can't resolve 'tailuicss' in Next.js 15+ with Turbopack enabled, this is a known Turbopack limitation with certain module resolution patterns.

Solution

The warning is harmless — TailUI works correctly via the PostCSS plugin. However, if you want to remove the warning, disable Turbopack:

package.json

// package.json
//-> Next.js 15+
{
  "scripts": {
    "dev": "next dev --no-turbopack"  
  }
}
//OR
//->Next.js 13 / 14
 "dev": "next dev --webpack"  
//->Next.js 12 and below
"dev": "next dev"

Or set the environment variable: TURBOPACK=0 next dev

Turbopack didn't exist yet — no flag needed.

Note

This is not a TailUI bug. The PostCSS plugin (tailuicss/postcss) handles all CSS injection correctly. The Tailwind plugin is optional and only adds content paths for better IntelliSense.