Fatal error help

Hello!
I’m not an expert user. I buyed the Basel theme and correctly installed it in my wp-admin. Now I tried to switch from my old theme to the Basel but the website and the wp admin now seem to be unreachable.

when i try to connect to wp admin i see this message in my browser

Fatal error: Call to undefined function vc_map_integrate_shortcode() in /web/htdocs/www.viacasentino5.com/home/wordpress/wp-content/themes/basel/inc/vc-element/vc-config.php on line 3771

Hi,

Please, provide us your admin and FTP access so we can login and check this on your side.

Thank you in advance.

Please find the information in private content area

You have an outdated version of the WPBakery plugin installed. Download the latest version in your account on our xtemos website and upload to your wp-content/plugins/ directory.

I did what you wrote me but if i try to enter wp admin I still find an error.

I see this message
Fatal error: Class ‘WC_Session’ not found in /web/htdocs/www.viacasentino5.com/home/wordpress/wp-content/plugins/woocommerce/includes/class-wc-session-handler.php on line 21

Maybe you have not updated the WooCommerce plugin as well. Download the latest version of the plugin and update it too.

Please read the private content

Currently, we can’t even access your WordPress dashboard. And it seems that you had an old version of the WordPress installed as well.

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