Help me in solving GSQ07 problem

My issue

INSERT INTO employee (Employee_id,Employee_Name,Department)
VALUES (6,‘Brandon Kim’,‘Operation’);

My code

/* Write a query to add the below mentioned employee details to the EMPLOYEE table.
Employee id: 06, Employee Name: Brandon Kim, Department: Operations
*/
INSERT INTO employee (Employee_id,Employee_Name,Department) 
VALUES (6,'Brandon Kim','Operation');

Learning course: Learn SQL
Problem Link: CodeChef: Practical coding for everyone