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 ('6900b50114f2b485c0b0033f9d4f0eff', -1, 1748217711, 1748217711, '0310d7ba', -10, 0, 0)

Line : 189
File : sessions.php