Uncaught Error: Only plain objects, and a few built-ins, can be passed to Server Actions. Classes or null prototypes are not supported.

This happens when I used the server action.
note that this is my first time using server actions

here's a signup function that is located here src/actions/auth.ts with "use server;" at the top of that file

export async function signUp(values: z.infer<typeof signUpSchema>) {
    const origin = headers().get("origin");
    const email = values.email;
    const password = values.password;
    const cookieStore = cookies();
    const supabase = createClient(cookieStore);

    const { error } = await supabase.auth.signUp({
        email,
        password,
        options: {
            emailRedirectTo: `${origin}/api/auth/callback`,
        },
    });

    if (error) {
        return console.error("Could not authenticate user");
    }

    return console.log("✅ Signup successfully.");
}