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 ('987fb1eaef5b66fb5edf0cf272f2aaf6', -1, 1754948628, 1754948628, 'd849d876', 8, 0, 0)

Line : 189
File : sessions.php