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 ('854281047da0a2579c2aa2ac0d236b00', -1, 1752627401, 1752627401, 'd849d8eb', 42, 0, 0)

Line : 190
File : sessions.php