[HELP] I have error witch jb_eden_garage2

[SQL] Query eden_garage start
[ERR] 1060 - Duplicate column name ‘state’
[ERR] ALTER TABLE owned_vehicles ADD state BOOLEAN NOT NULL DEFAULT FALSE COMMENT ‘Etat de la voiture’ AFTER owner;
ALTER TABLE owned_vehicles ADD INDEX vehsowned (owner);
ALTER TABLE owned_vehicles ADD fourrieremecano BOOLEAN NOT NULL DEFAULT FALSE;
ALTER TABLE owned_vehicles ADD vehiclename varchar(50) NOT NULL DEFAULT ‘voiture’;
[SQL] Finished with error

I get this problem, how can I fix it?
esx_jb_eden_garage2