phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('d90857059ff0238ad1c22c6ca5971f87', -1, 1747474076, 1747474076, '12d8abc7', 42, 0, 0)

Line : 190
File : sessions.php