Groups provides group-based user membership management, group-based capabilities and content access control. It integrates standard WordPress capabilities and application-specific capabilities along with an extensive API.
The issue is that extend_for_orderby_groups_read and extend_for_filter_groups_read both run on front-end AJAX calls to admin-ajax.php, where post_type can be an array.
It's an easy fix as I can't see a need for this to run on AJAX calls at all, and I'll add a pull request for this.
proaktion
commented
7 years ago
See https://wordpress.org/support/topic/warning-illegal-offset-type-7/ for example.
The issue is that
extend_for_orderby_groups_readandextend_for_filter_groups_readboth run on front-end AJAX calls to admin-ajax.php, wherepost_typecan be an array.It's an easy fix as I can't see a need for this to run on AJAX calls at all, and I'll add a pull request for this.