Organization of the hairstyling lessons

ERREUR : Recherche des Master class
Requete: 
			SELECT
				`langue`.`LibelleLangue` AS `Langue`,
				`langue`.`IdLangue` ,
				`Formation`.`Libelle` AS `Formation`,
				`ProchaineSession`.`Libelle` AS `ProchaineSession`,
				`Prix`.`Libelle` AS `Prix`
				FROM
				`langue`, `tarifformation`
				Left Join `libelle_langue` AS `Formation` ON `langue`.`IdLangue` = `Formation`.`IdLangue` AND `Formation`.`IdLib` = `tarifformation`.`IdLibFormation`
				Left Join `libelle_langue` AS `Prix` ON `langue`.`IdLangue` = `Prix`.`IdLangue` AND `Prix`.`IdLib` = `tarifformation`.`IdLibPrix`
				Left Join `libelle_langue` AS `ProchaineSession` ON `langue`.`IdLangue` = `ProchaineSession`.`IdLangue` AND `ProchaineSession`.`IdLib` = `tarifformation`.`IdLibProchaineSession`
				WHERE
				`langue`.`IdLangue` =  '2'  AND `tarifformation`.`IdSite` =  '2'
			ORDER BY
			`tarifformation`.`Ordre` ASC
				
 1054 : Unknown column 'langue.IdLangue' in 'on clause'
/english/organisation-planning-and-price.php

ERREUR : Recherche des Master class
Requete: 
			SELECT
				`Formation`.`Libelle` AS `Formation`
				FROM
				`langue`, `contenuformation`
				Left Join `libelle_langue` AS `Formation` ON `langue`.`IdLangue` = `Formation`.`IdLangue` AND `Formation`.`IdLib` = `contenuformation`.`IdLibFormation`
			WHERE
				`langue`.`IdLangue` =  '2'  AND `contenuformation`.`IdSite` =  '2'
			ORDER BY
			`contenuformation`.`Ordre` ASC
				
 1054 : Unknown column 'langue.IdLangue' in 'on clause'
/english/organisation-planning-and-price.php