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 ('a14396d2cf1958f2bb8a2e624f5a41e4', -1, 1711709881, 1711709881, '54ccfc03', 2, 0, 0)

Line : 187
File : sessions.php