phpBB : Critical Error

Error creating new session

DEBUG MODE

SQL Error : 1062 Duplicate entry '-1' for key 2

INSERT INTO forum_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('87911312c18ff3ccbc2fa3a8b4906b16', -1, 1717108977, 1717108977, '12dec4af', -11, 0, 0)

Line : 187
File : sessions.php