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 ('6091f9e5956034787275c610e03bb5a2', -1, 1767817700, 1767817700, 'd849d822', -4, 0, 0)

Line : 193
File : sessions.php