I've been trying to use the layered nav widget without success, so I'm writing here to know if anyone of you have used it and could let it work properly.
When I just add the widget and save the preferences on the front-end page I see an error like:
the array $_attributes_array is not an array and the merge_array does not work.
Error raised at line 56.
After some investigation I've noticed the woocommerce_layered_nav_init is never executed because the is_active_widget always returns false.
Even when I try removing the check I can't go too far because I don't get the error but the widget is obviously not displayed.
So it would be just enough to know this is a common issue because I don't have idea why it should not work.
Any hints are welcome