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 ('33f0c5b7477bd1d8825f90206a72d71a', -1, 1711692039, 1711692039, '2cc8bf92', -11, 0, 0)

Line : 187
File : sessions.php