Linting and checking validity of types ..Failed to compile

[dois12]

I am trying to compile the app using npm run build
I get error:
▲ Next.js 15.1.7

• Environments: .env

Creating an optimized production build …
✓ Compiled successfully
Linting and checking validity of types …Failed to compile.

.next/types/app/[…page]/page.ts:34:29
Type error: Type ‘PageProps’ does not satisfy the constraint ‘import(“C:/Users/Admin/builder-app/.next/types/app/[…page]/page”).PageProps’.
Types of property ‘params’ are incompatible.
Type ‘{ page: string; }’ is missing the following properties from type ‘Promise’: then, catch, finally, [Symbol.toStringTag]

32 |
33 | // Check the prop type of the entry function

34 | checkFields<Diff<PageProps, FirstArg<TEntry[‘default’]>, ‘default’>>()
| ^
35 |
36 | // Check the arguments and return type of the generateMetadata function
37 | if (‘generateMetadata’ in entry) {
Next.js build worker exited with code: 1 and signal: null

how to fix this

[tlee-pb]

This error is happening because the params field in your PageProps type is expected to be a Promise, but you have it as a plain object ({ page: string }).

Specifically, this part of the error:

Type ‘{ page: string; }’ is missing the following properties from type ‘Promise’

Likely cause:

You’re probably using generateStaticParams, dynamic routing (e.g., [...page]), or params in your layout/page file, and the type definition is not matching the expected structure that Next.js generated during build.

---

Solution:

1. Inspect your PageProps type and compare it to what Next.js expects.

If you have something like:

type PageProps = {
  params: { page: string }
}

Try updating it to match the expected type (which is probably asynchronous):

type PageProps = {
  params: Promise<{ page: string }>
}

But this is unusual — usually params is not a Promise, so the real problem might be the other way around: your component is treating params as a Promise, when it should be just an object.

So if you see code like:

const Page = async ({ params }: PageProps) => {
  const { page } = await params;

You should change it to:

const Page = async ({ params }: PageProps) => {
  const { page } = params;

---

To confirm:

Search for params in your [...page]/page.tsx file and see if you’re doing await params or treating it like a Promise. That’s the likely mismatch.