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 ('a9959a1b93f4dc7c7e0f1eb34c1ceaaa', -1, 1711705791, 1711705791, '54ccfc03', -4, 0, 0)

Line : 187
File : sessions.php