phpBB : Critical Error

Error creating new session

DEBUG MODE

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

INSERT INTO phpbb_sessions (session_id, session_user_id, session_start, session_time, session_ip, session_page, session_logged_in, session_admin) VALUES ('67b0d56c07d534509dd2173c92632767', -1, 1711679260, 1711679260, '0358fe32', -4, 0, 0)

Line : 187
File : sessions.php