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 ('ca5c32e3bb7c12dc78e5e4c6131855c4', -1, 1737556099, 1737556099, '12dce69c', 5, 0, 0)

Line : 187
File : sessions.php