Fatal Error

I know this link is from WooCommerce docs, but they’re not WooCommerce specific:

https://docs.woocommerce.com/document/increasing-the-wordpress-memory-limit/

The issue is nothing specific to CMB2, it’s just a case of the site is trying to use more memory than is presently available to you.

Thanks for the reply. But when I switched to wp 4.7 it worked alright. Maybe there is problem with 4.8, dunno.

Chances are then that the site simply wasn’t using up all the available memory at that point. It’s not a WordPress/CMB2 issue still, it’s just that you managed to get under your server hardware limit for the moment. The shared server part is also a playing factor.

Maybe. Still looking into it, will post if i find anything. cheers.