Next.JS monorepo not loading correct assets when switching zones (Loading Chunk Error)

Question

I have multiple projects set up in a monorepo. I load all of them and browse out to Shared to load the initial layout. However, when I click a link to go to a different zone/app Customer, I receive Loading chunk app/testing/page failed. (error: https://localhost:5206/_next/static/chunks/app/testing/page.js). Sure enough, opening development tools, it doesn't exist. I also have the same issue with my styling, and I believe the root cause is the same. However, if I refresh the page, everything works correctly.

I have my rewrites set up in my next.config.ts:

  async rewrites() {
    return [
      {
        source: '/customer/:path*',
        destination: 'https://localhost:5216/:path*',
      },
      {
        source: '/customer-static/_next/:path*',
        destination: 'https://localhost:5216/_next/:path*',
      },

...plus more

The url is simply: href: '/customer/testing'.

I notice when I refresh the page however, that the _next/static folder is now within my customer folder (as written in my rewrites). How can I fix this so that my correct css/js chunks load correctly without a refresh?

Михайло Роздорожнюк · Accepted Answer · 2025-08-13 19:49:00Z

0

Fix the rewrite order and add fallbacks

Make sure your static asset rewrites come before the page rewrites:

javascript

async rewrites() {
  return [
    // Static assets FIRST
    {
      source: '/customer-static/_next/static/:path*',
      destination: 'https://localhost:5216/_next/static/:path*',
    },
    {
      source: '/customer-static/_next/:path*',
      destination: 'https://localhost:5216/_next/:path*',
    },
    // Then pages
    {
      source: '/customer/:path*',
      destination: 'https://localhost:5216/:path*',
    },
    // Add a fallback for any missed static assets
    {
      source: '/_next/static/chunks/app/customer/:path*',
      destination: 'https://localhost:5216/_next/static/chunks/app/:path*',
    }
  ]
}

answered Aug 13 at 19:49

Михайло Роздорожнюк

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1 Comment

Chris Aug 13 at 20:02

This didn't work. I deleted my .next folders and rebuilt. I still get GET /_next/static/chunks/app/testing/page.js 404 in 3447ms

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