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 ('7d12f3a717da7a844df38196f9ae1cca', -1, 1713439441, 1713439441, '12e3727d', 5, 0, 0)

Line : 187
File : sessions.php