A Database Error Occurred

Error Number: 1054

Unknown column 'knowledge' in 'where clause'

SELECT e.*,GROUP_CONCAT(DISTINCT(gi.image_name)) as gallery_image FROM event e LEFT JOIN gallery_album ga ON ga.id=e.galleryid LEFT JOIN gallery_images gi ON FIND_IN_SET(ga.id,gi.album_id) WHERE e.id=knowledge-series-mumbai-pune AND e.slug='detail'

Filename: models/Event_model.php

Line Number: 23