phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('e9e0207f819b10ee7318e2bbc95aa64a', -1, 1728634958, 1728634958, '03ec56b8', -11, 0, 0)

Line : 187
File : sessions.php