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 ('904428bd6ef8d53d3e6d40a43b65f492', -1, 1752394755, 1752394755, 'd849d88e', 2, 0, 0)

Line : 190
File : sessions.php