Help me in solving GSQ15 problem

help
,
1

My issue

Runtime error near line 13: UNIQUE constraint failed: employee.Address (19)

My code

/* Debug this query to run the problem successfully. 
- Don’t worry about the actual values as long as you get the query to run. */

INSERT INTO employee (Id,Name,Age,Address)
VALUES  (1, 'John Smith', 25, '123 Main St'),
        (2, 'Sarah Johnson', 30,'456 Broadway'),
        (3, 'Michael Brown', 45, '123 Main St'),
        (4, 'Jessica Davis', 28, '321 Elm St');

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