phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '71a9a3fe3583ed589f7aa55be0cfe4f0' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('71a9a3fe3583ed589f7aa55be0cfe4f0', -1, 1779767278, 1779767278, 'c0a81002', -501, 0, 0)

Line : 187
File : sessions.php