Can't execute query

SELECT *,DATE_FORMAT(date_creation,'%d/%m/%Y') as date_creation,
			PERIOD_DIFF(DATE_FORMAT(NOW(),'%Y%m'),DATE_FORMAT(date_creation,'%Y%m')) as moisEcart 
			FROM actualite 
			WHERE online=1 
			and PERIOD_DIFF(DATE_FORMAT(NOW(),'%Y%m'),DATE_FORMAT(date_creation,'%Y%m')) <7
			ORDER BY TO_DAYS(date_creation) desc LIMIT 0,200

MySQL Error: La table 'atmopaca_db.actualite' n'existe pas

This script cannot continue, terminating.