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 ('c60d76e66778c17c4c824724b2ca9e8b', -1, 1714010909, 1714010909, '12e3727d', -10, 0, 0)

Line : 187
File : sessions.php