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 ('0bec426e7555d54522a639e5b9a7d770', -1, 1730416928, 1730416928, '0d3a0244', 18, 0, 0)

Line : 195
File : sessions.php