Next 15.0.3 issue AppConfig' cannot be used as a JSX component

[chrishj59]

When upgrading to Nextjs 15.0.3 I get the following error using PNPM run build.

'AppConfig' cannot be used as a JSX component.
Its type '(props: AppConfigProps) => JSX.Element' is not a valid JSX element type.
Type '(props: AppConfigProps) => JSX.Element' is not assignable to type '(props: any, deprecatedLegacyContext?: any) => ReactNode'.
Type 'Element' is not assignable to type 'ReactNode'.
Property 'children' is missing in type 'Element' but required in type 'ReactPortal'.

49 | <>
50 | {children}

51 |
| ^
52 | </>
53 | );
54 | }