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 ('aed8d423e0915955e9e6b22ec17d5bf7', -1, 1714041337, 1714041337, '0393cd9a', -4, 0, 0)

Line : 187
File : sessions.php