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 ('2d1d44c6b6c83a357881d2318a4692c8', -1, 1740078226, 1740078226, '12ddb93a', 3, 0, 0)

Line : 189
File : sessions.php