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 ('a0dd1a6a5b72e4654e51ae4db5864460', -1, 1714004133, 1714004133, '039102b8', 5, 0, 0)

Line : 187
File : sessions.php