WP 4.9 upgrade "Argument #_ is not an array in …/widgets.php on line_" error
After upgrading to WP 4.9 I’m now getting an error when navigating to the Appearance/Widgets area within the Dashboard. This is a fresh install on a local development site with the latest GP 1.4 and GP 1.5.3 premium plugin. GP Premium is the ONLY plugin activated. Here is a screenshot:
