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 ('64ea0c8ac93f5fdc56c4684973c67fc2', -1, 1737596888, 1737596888, '12dc8e43', 9, 0, 0)

Line : 187
File : sessions.php