After changing the server, several PHP pages in the backend of the website received 404 errors, status code 302, static page access was normal, and other PHP pages were fine. Only these two or three PHP pages received 404 errors, and the files and files were confirmed. The directory permissions are OK, but I am confused...
I tried moving the file out and then into the directory, and even after the file was renamed, the access still got 404...

It is normal for another website with the same background to access the same file! ! ! ! ! fainted

The lnmp one-click package is 1.10.0, and the previous nginx is 1.8.0
Except for nginx, the other PHP, MySQL and other versions of the servers on both sides are basically the same. The system used to be centos, and now it is Debian