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 ('983e92f809d8a44bc908e6df6496c9ae', -1, 1730417274, 1730417274, '0390521a', 19, 0, 0)

Line : 195
File : sessions.php