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 ('601061e21a474e4b3b8f56d1cc61475d', -1, 1713436971, 1713436971, '12be9cd4', -10, 0, 0)

Line : 187
File : sessions.php