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 ('ca1215c1a756421230a2dc91f7ff9cf1', -1, 1749203321, 1749203321, 'd849d899', 2, 0, 0)

Line : 190
File : sessions.php