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 ('4aba242a3dcf63d176c6c6d19f07844a', -1, 1737484800, 1737484800, '03812dca', -9, 0, 0)

Line : 187
File : sessions.php