Page not loading if session is enabled!!

I have developed web application using Beta version of CI4. Now I am updating this to current version. But surprisingly the session is not working.


Here is the sample code.

PHP Code:

<?php if(session('cart')):?>
        <span class="badge badge-cnapp rounded-sm small-70 float-left">
                <?php echo count($session->cart)?>
        </span>
<?php endif;?>

If I load the website with the above code, the browser is showing:

Hmmm… can't reach this page
The connection was reset.

But if I comment out the above code like bellow, everything is working fine:

PHP Code:

<?php // if(session('cart')):?>
        <span class="badge badge-cnapp rounded-sm small-70 float-left">
                <?php //echo count($session->cart)?>
        </span>
<?php //endif;?>

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