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 ('43c2a643a76f4fbe0f8e126269df1d68', -1, 1711713975, 1711713975, '54ccfc03', -9, 0, 0)

Line : 187
File : sessions.php