phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO sf_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('facd4346141bb40bda30e414a1c6f449', -1, 1744521350, 1744521350, '12777700', -7, 0, 0)

Line : 188
File : sessions.php