The problem of integrity
When you maintain your Hugo project both on Windows and Linux/macOS, you may get this error. The problem is caused by the default EOL character. The different EOL characters in the file will produce different SHA-256 hash codes. So what needs to do is to force the files to have LF or CRLF at the end of the line.
Solution
We can use git to ensure this. Just add a .gitattributes file and type the following config in the file.
* text=auto eol=lf
Then commit this change. There may be some files already used the CRLF EOL character. We just need to run the following command.
git rm --cached -r .
git reset --hard
At last, we rebuild the site and deploy it.