Fatal error: Uncaught exception 'Exception' with message 'Error: Unknown column '17_20_21' in 'where clause'<br />Error No: 1054<br />
SELECT c.category_id, cd.category_id, cd.name
FROM ttl_category c
LEFT JOIN ttl_category_description
AS cd
ON c.category_id = cd.category_id
WHERE
c.category_id IN (17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35,36,37,38,39,40,41,42,43,105,107,149,150,151,152,399,423,269,138,270,271,1,13,14,384,433)
AND
c.category_id IS NOT NULL AND c.parent_id = 17_20_21 ORDER BY cd.name ASC' in /var/www/thetransportlibrary.co.uk/public_html/system/library/db/mysqli.php:40
Stack trace:
#0 /var/www/thetransportlibrary.co.uk/public_html/system/library/db.php(16): DB\MySQLi->query('\n\t\t\tSELECT c.ca...', Array)
#1 /var/www/thetransportlibrary.co.uk/public_html/catalog/model/catalog/category.php(74): DB->query('\n\t\t\tSELECT c.ca...')
#2 [internal function]: ModelCatalogCategory->getCategoriesByResults('17_20_21', Object(stdClass))
#3 /var/www/thetransportlibrar in /var/www/thetransportlibrary.co.uk/public_html/system/library/db/mysqli.php on line 40