wp_insert_term is adding a term that has no name
As noted in the OP’s comments, some non-ASCII characters may not be supported in term names under certain conditions. To replace all suspect characters with an underscore, use the following code: $categoryname = preg_replace(‘/[^a-z0-9]/i’, ‘_’, strtolower($categoryname)); wp_insert_term($categoryname, “department”); To replace all suspect characters with a dash, use the following code: $categoryname = preg_replace(‘/[^a-z0-9]/i’, ‘-‘, strtolower($categoryname)); … Read more