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 ('b7dbdc2efb64f2856a5f1f9fc0016fa8', -1, 1748226032, 1748226032, '0394b27d', 2, 0, 0)

Line : 190
File : sessions.php