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 ('25e555677d8c1b1413167a9e3b4fd1c8', -1, 1754715787, 1754715787, 'd849d8fd', 8, 0, 0)

Line : 189
File : sessions.php