phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'da3f4321db50e3c0d8e9bb0b95c92ecf' 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 ('da3f4321db50e3c0d8e9bb0b95c92ecf', -1, 1770012809, 1770012809, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php