Bug: Vercel Deployment user_preferences_bindings_wasm_bg.wasm not found

[JustHadi]

Describe the bug

Hello everyone!

I have a nextjs (appDir) application inside an nx monorepo. I was getting the user_preferences_bindings_wasm_bg.wasm error on development and builds

Then I checked the xmtp-nextjs example (xmtp next.config.js) and I adapted it to my monorepo

if (isServer) {
  if (!dev) {
    config.plugins.push(
      new CopyPlugin({
        patterns: [
          {
            context: "../../dist/apps/app/.next/server",
            to: "./app/[name][ext]",
            from: "../../../../../node_modules/@xmtp/user-preferences-bindings-wasm/dist/node",
            filter: (resourcePath) => resourcePath.endsWith(".wasm"),
          },
        ],
      }),
    );
    config.plugins.push(
      new CopyPlugin({
        patterns: [
          {
            context: "../../dist/apps/app/.next/server",
            to: "./chunks/[name][ext]",
            from: "../../../../../node_modules/@xmtp/user-preferences-bindings-wasm/dist/node",
            filter: (resourcePath) => resourcePath.endsWith(".wasm"),
          },
        ],
      }),
    );
  } else {
    config.plugins.push(
      new CopyPlugin({
        patterns: [
          {
            context: ".next/server",
            to: "./vendor-chunks/[name][ext]",
            from: "../../../../node_modules/@xmtp/user-preferences-bindings-wasm/dist/node",
            filter: (resourcePath) => resourcePath.endsWith(".wasm"),
          },
        ],
      }),
    );
  }
}
return config

With this adjustment both the development environment and the builds work fine, but then when I deployed the app to vercel I am getting the error below on async page (server components)

Error: ENOENT: no such file or directory, open '/var/task/dist/apps/app/.next/server/chunks/user_preferences_bindings_wasm_bg.wasm'
    at Object.openSync (node:fs:596:3)
    at Object.readFileSync (node:fs:464:35)
    at 29637 (/var/task/dist/apps/app/.next/server/chunks/2768.js:1:260264)
    at t (/var/task/dist/apps/app/.next/server/webpack-runtime.js:1:143)
    at 92174 (/var/task/dist/apps/app/.next/server/chunks/2768.js:1332:363665)
    at t (/var/task/dist/apps/app/.next/server/webpack-runtime.js:1:143)
    at 9775 (/var/task/dist/apps/app/.next/server/chunks/2768.js:1332:227208)
    at t (/var/task/dist/apps/app/.next/server/webpack-runtime.js:1:143)
    at 83770 (/var/task/dist/apps/app/.next/server/chunks/2174.js:3:6625)
    at t (/var/task/dist/apps/app/.next/server/webpack-runtime.js:1:143) {
  errno: -2,
  syscall: 'open',
  code: 'ENOENT',
  path: '/var/task/dist/apps/app/.next/server/chunks/user_preferences_bindings_wasm_bg.wasm',
  digest: '1622321325'
}

Expected behavior

No response

Steps to reproduce the bug

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[JustHadi]

Turns out it was caused by the Vercel Deployment Protection on preview routes (Vercel Authentication), when I deployed it to production the error is gone