There are a large number of error.txt files on my website 2021/02/14 19:33:51 [error] 17247#0: *2443455 open() "/home/……/wwwroot/uploadfile/2018/0210/ 20180210100813312.gif" failed (2: No such file or directory), client: 112.39.179.149, server: pigscience.com, request: "GET /uploadfile/2018/0210/20180210100813312.gif HTTP/1.1", host: "pigscience .com", referrer: "http://www.hp495.com/" The domain name behind is the gambling website. these things. There are so many every day, what’s going on? How to deal with it?