phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('81e715b22d53c6bfc50e7430a25634a9', -1, 1737480989, 1737480989, '1276a2a6', 8, 0, 0)

Line : 187
File : sessions.php