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 ('4f4778a0f8f41ac9e97e65b7d3ed12c0', -1, 1721591667, 1721591667, '54ccfc03', -1, 0, 0)

Line : 187
File : sessions.php