You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'is-spanje-na-de-brexit-nog-leuk-voor-de-britten-voor-nederlanders-en-belgen-wel)' at line 3
SELECT new FROM news_news_categories WHERE cat IN (4,13,19,20,21,is-spanje-na-de-brexit-nog-leuk-voor-de-britten-voor-nederlanders-en-belgen-wel)