Invalid query:
SELECT pc.`parent_id`, p.`name` FROM pc_parent_categories pc, pc_categories p WHERE p.category_id = AND p.category_id = pc.category_id AND p.lang_id = 1 AND pc.lang_id = 1
You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'AND p.category_id = pc.category_id AND p.lang_id = 1 AND pc.lang' at line 6