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 ('1d2df46df0294e7b45761ada9b6c5f3b', -1, 1714680719, 1714680719, '038cb993', -1, 0, 0)

Line : 187
File : sessions.php