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 ('7d720e80142748fab1e7ba8b4db0f9f8', -1, 1737483521, 1737483521, '12e162be', 9, 0, 0)

Line : 187
File : sessions.php