Csrf not working sometimes

no idea but in a form this works for me :

Code:

<div class ="flex2">
    <div class ="content">
    <div class="d-flex justify-content-center">
            <?= form_open_multipart('newblog'); ?>
            <?= csrf_field() ?>

then the controller that accepts the data from the form , check with:

Code:

$lucky= $this->request->getVar(csrf_token());

I use Arch Linux by the way 

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