Hi Ian,
I completed the process you described and isolated the problem to the WooCommerce plugin. When it is deactivated everything works properly but when it is activated I get the following error when I try to edit or add any post or page (although this problem didn’t occur prior to my 5.6 update)
This site can’t be reached The webpage at https://www.cognificent.org/wp-admin/post.php?post=1&action=edit might be temporarily down or it may have moved permanently to a new web address.
ERR_HTTP2_PROTOCOL_ERROR
Do I need to go to WooCommerce for this problem now I assume?
thank you
