phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry 'e731d839dae9cc912240f0ecfa077981' 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 ('e731d839dae9cc912240f0ecfa077981', -1, 1770339239, 1770339239, 'd849d868', -4, 0, 0)

Line : 187
File : sessions.php