phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('4479b609e0b58bf5c425e3067945c3ee', -1, 1717147749, 1717147749, '12dec4af', 0, 0, 0)

Line : 187
File : sessions.php