phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '1662d67e0b8603732476e739ad9c0b8b' for key 1

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('1662d67e0b8603732476e739ad9c0b8b', -1, 1464755034, 1464755034, '369ed014', -1, 0, 0)

Line : 187
File : sessions.php