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 ('f34d525012fad5a8daa61a7744e1aac2', -1, 1713540545, 1713540545, '340e79f2', -10, 0, 0)

Line : 187
File : sessions.php