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 ('65d00741e8e26bd0fea4d7a8c3c8bfa6', -1, 1737537769, 1737537769, '1275989c', 10, 0, 0)

Line : 187
File : sessions.php