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 ('c9c42ce237bacf14da1bd063cd807733', -1, 1754867313, 1754867313, 'd849d8fd', 2, 0, 0)

Line : 189
File : sessions.php