phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('7891304e1721c57aca6ca5bd69bb451b', -1, 1717044343, 1717044343, '12dcba30', -7, 0, 0)

Line : 187
File : sessions.php