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 ('8bab76a5dd0a17e8d8db66a25b4520b8', -1, 1737482776, 1737482776, '12bce945', 10, 0, 0)

Line : 187
File : sessions.php