I replicated it and u get this error , it says you trying to go to a new Page when this one hasnt finish render
what you can do is put the if inside a useEffect, so it render and then moves to the new page

export default function NewPage() {
const router = useRouter();
const pathname = usePathname();
const searchParams = useSearchParams();

const createQueryString = useCallback(
(name: string, value: string) => {
const params = new URLSearchParams(searchParams.toString());
params.set(name, value);
return params.toString();
},
[searchParams]
);

useEffect(() => {
if (!searchParams.has("type")) {
router.push(pathname + "?" + createQueryString("type", "note"));
}
}, [searchParams, router, pathname, createQueryString]);

return <div>...</div>;
}