Below is my SQL ode for the DEPARTMENT table in the picture provided, When running the code I get the error forgein key is incorrectly formed. Could you please show me hw to fix it

CODE FOR DEPARTMENT TABLE:

CREATE TABLE DEPARTMENT$\_$maw

$($Department$\_$Name VARCHAR$(15)$ NOT NULL,

Department$\_$Number INT PRIMARY KEY NOT NULL,

Manager$\_$SSN CHAR$(9)$ NOT NULL,

ManageStartDate DATE,

CONSTRAINT DEPARTMENT$\_$FK FOREIGN KEY$($Manager$\_$SSN$)$ REFERENCES EMPLOYEE$\_$xxx$($SSN$\_$Number$)$

$)$;