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 ('021560c5d151e2842159bcecbe4d006f', -1, 1717128464, 1717128464, '03900f3d', 0, 0, 0)

Line : 187
File : sessions.php