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 ('fd8d6e298a8a7f1a6dc2ec64b3b0a73b', -1, 1713406660, 1713406660, '12bfc36e', -9, 0, 0)

Line : 187
File : sessions.php