phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'a898bf6292f166548c97c83baf4aa639' 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 ('a898bf6292f166548c97c83baf4aa639', -1, 1768210003, 1768210003, 'd849d83d', 43, 0, 0)

Line : 187
File : sessions.php