I’m trying to create a new page after submitting a form to the server then redirecting the client to this new page. After redirecting, I get an error 404 and after a refresh it work (at least in dev, i didn’t tried in production). So I add a delay to the redirect, which… it work half of the time.

Here the content of my +page.svelte

<form method="POST" action="?/create">
    <label>
        Title
        <input name="title" type="text">
    </label>
    <label>
        URL
        <input name="URL" type="text">
    </label>
    <button>Submit</button>
</form>

And of +page.server.js

import { redirect } from '@sveltejs/kit';
import * as fs from 'node:fs';

/** @type {import('./$types').Actions} */
export const actions = {
    create: async ({ request }) => {
        const data = await request.formData()
        //const gameTitle = data.get('title')
        const gameURL = data.get('URL')

        const fileTemplate = '<script>n    import Template from "../template.svelte";n</script>nn<p>I am the page file</p>n<Template />'

        fs.mkdir(`./src/routes/(games)/${gameURL}/`, (error) => { console.error(error) })
        fs.writeFile(`./src/routes/(games)/${gameURL}/+page.svelte`, fileTemplate, (error) => { console.error(error) })
        
        setTimeout(redirect(303, `/${gameURL}`), 3000)
        
        return { success: true }
    },
    delete: async (event) => { // TODO: delete selected page },
    update: async (event) => { // TODO: change options on a file already created }
};

This should add a folder with the name chosen, and then a svelte file with content alredy in.
It should look like this in routes folder :

routes
| - (games)
  | - [This should be gameURL]
    | - +page.svelte

atm here is the content of +page.svelte

<script>
    import Template from "../template.svelte";
</script>

<p>I am the page file</p>
<Template />

In theory template.svelte should only give out the shape of the page and all other +page.svelte within folder should have colors and image but that just for context.

Thanks for any help ^^.