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 ('aedfc332a0d47c7d6b1d85c5d1332fe9', -1, 1754871415, 1754871415, 'd849d83f', -9, 0, 0)

Line : 189
File : sessions.php