Hi I,
Thank you for reporting this issue!
The documentation of WordPress states that get_post_meta() should never return a non-array value with the parameters we’ve given… so, that’s odd. There’s probably a plugin present that actively manipulates that incorrectly.
So, the cause of this issue must lie elsewhere. Could you try deactivating some other plugins until the warnings go away? That should help us to deduct the cause of the problem.
I can’t promise a patch in The SEO Framework that addresses this, as that’d only obscure the fact of something is broken elsewhere; which isn’t very helpful.
Luckily, these warnings amount to non-usable values throughout the request. What this means is that everything in The SEO Framework falls back to default and intended behavior for the requests.
The solution, for now, is to set WP_DEBUG to false in your wp-config.php file until the cause is addressed. However, it’s best to find that first. Cheers!
