Appwrite Bun 1.0 function runtime error

const validateUser = async (client: Client, userId : string) => {
    const users = new Users(client)
    const user = await users.get(userId)
    if (!user) {
        return  {
            code: 400,
            message: 'User not found',
        }
    }

    return {
        code: 200,
        message: "User exists, Proceeding with function execution"
    }
}