gtm4wp datalayer name is not defined

Hello,

as the title suggests, I have a problem with “gtm4wp_datalayer_name”, this is precisely “is not defined”.

This error appears ONLY if CookieBot is active.

I’ve already tried deactivating and reactivating plug-ins, activating and deactivating the “Integration” options of both plug-ins, but nothing changes.

I have integrated GTM with the “Custom (needs tweak in your template)” option.

This is the site that presents the problem:
https://www.alfa-solutions.it/

Thanks for your attention and assistance.

Best regards