npm i -D @sveltejs/adapter-static@next

then make svelte.config.js look like this:

/** @type {import('@sveltejs/kit').Config} */

import staticAdapter from '@sveltejs/adapter-static'

const config = {
    kit: {
        // hydrate the 
 element in src/app.html
        adapter: staticAdapter(),
        target: '#svelte'
    }
};

export default config;