phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '2799f3c398465e922c0c846e14bfe521' for key 'PRIMARY'

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('2799f3c398465e922c0c846e14bfe521', -1, 1787812947, 1787812947, 'd849d827', -4, 0, 0)

Line : 187
File : sessions.php