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 ('dd48da768f5c81f80103e06b7cda1393', -1, 1750034500, 1750034500, 'd849d880', -9, 0, 0)

Line : 190
File : sessions.php