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 ('ce7f1d8243b48a746dd7fa8c864a9bda', -1, 1737556143, 1737556143, '030fd6f4', 8, 0, 0)

Line : 187
File : sessions.php