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 ('d22b7a83910efe4b859d20ef364cd099', -1, 1730420345, 1730420345, '0d3b1b8d', 37, 0, 0)

Line : 195
File : sessions.php