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 ('8dbc6dc37c2dbfd744813d97dbd6e6c7', -1, 1737622195, 1737622195, '0387d8c7', -9, 0, 0)

Line : 187
File : sessions.php