phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'aaeed88b50682af48a85be8bf7c9d4f4' for key 'phpbb_sessions.PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('aaeed88b50682af48a85be8bf7c9d4f4', -1, 1784838963, 1784838963, 'd849d8e6', -9, 0, 0)

Line : 187
File : sessions.php