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 ('256084eb3d178478000542252d93f3fc', -1, 1737596710, 1737596710, '12dfc31e', 8, 0, 0)

Line : 187
File : sessions.php