405 POST method not allowed. No actions exist for this page sveltekit

[eli-ott]

I have a this form in my +page.svelte at route/manager :

<form 
id="file_selection" 
action="?/manageFile" 
method="post"
use:enhance={() => {
    waiting = true;

    return async ({update, result}) => {
        await update();

        console.log(result);
    }
}}>
    <h1>
        Veuillez choisir ou déposer votre <span id="stressed"
            >relevé bancaire</span
        >.
    </h1>
    <input type="file" id="fileInput" name="fileInput" bind:files /> -->
    <label for="file">
        {message}
    </label>
    <p>Types de fichier accepté: <i>.xlsx</i> ; <i>.csv</i></p>
    <button class="cta" type="submit">Continuer</button>
</form>

and this is my +page.server.ts at the same path as my page :

import type { Actions } from '@sveltejs/kit';

export const actions: Actions = {
    manageFile: async ({ request }) => {
        console.log(await request.formData());
    }
}

It is very simple and i've checked everything multiple times that it is right. But I still get the 405 POST method not allowed. No actions exist for this page error.

I've also tried without use:enhance too.

Any help is welcome, it is driving me crazy :/

[eli-ott]

Sorry guys, I did not look at my file name like a dummy.
I missed the + in my +page.server.ts.

:///////