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 ('65f933adb475e2ad42ab3b3f27ef9df5', -1, 1770640072, 1770640072, 'd849d814', -6, 0, 0)

Line : 193
File : sessions.php