[web2py] u'Cannot add or update a child row

[Hassan Alnatour]

Dear ALL , 

I am trying to move a databse from sqlite to mysql using csv import / 
export all , and i am getting this error : 

<class 'gluon.contrib.pymysql.err.IntegrityError'> (1452, u'Cannot add or 
update a child row: a foreign key constraint fails 
(`dbi3zif3`.`auth_event`, CONSTRAINT `auth_event_ibfk_1` FOREIGN KEY 
(`user_id`) REFERENCES `auth_user` (`id`) ON DELETE CASCADE)')

what can i do to fix this ?

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