Rewrite rule not working for WordPress subdirectory

I'm trying to rewrite WordPress URLs to another domain but the following rule isn't working:

{
  "rewrites": [
    {
      "source": "/kurdish/wp(.*)",
      "destination": "https://example.com/kurdish/wp$1"
    }
  ]
}

but when i put "cleanUrls": true it works perfectly

Expected behavior:

/kurdish/wp-admin → https://example.com/kurdish/wp-admin
/kurdish/wp-login.php → https://example.com/kurdish/wp-login.php

Current behavior:

404 Not Found

Vercel deployment details:

Framework: sveltekit
Node.js version: 20

There's another community post with 404 debugging tips that might be helpful. Please give these solutions a try and let us know how it goes.

https://community.vercel.com/t/debugging-404-errors/437

Vercel Community

Debugging 404 Errors

Sometimes things don’t go as expected when deploying a website. If you see a 404 on your site, that means the page or resource couldn’t be found. There are...

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