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 ('3d281e5ca40e9209f2d6d6b9914a2e4d', -1, 1713893883, 1713893883, '12743fec', 2, 0, 0)

Line : 187
File : sessions.php