phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '4301fad3305cf764ad498e67bcb0a3b3' 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 ('4301fad3305cf764ad498e67bcb0a3b3', -1, 1770049283, 1770049283, 'd849d817', -4, 0, 0)

Line : 187
File : sessions.php