phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'bb8ce34d9f60b75cdd52ccb68289d6f0' 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 ('bb8ce34d9f60b75cdd52ccb68289d6f0', -1, 1770756959, 1770756959, '126109ab', -7, 0, 0)

Line : 187
File : sessions.php