3 rules can never take effect
A broader rule of the same type already covers these paths.
Consequence. These lines change nothing. They are harmless, but they add length to a file that has a size limit, and they make the real policy harder to read.
If that is not intended. Remove the redundant rules, or narrow the broader rule if it is catching more than intended.
disallow: /404.htmlL10Already covered by "disallow: /404" on line 9disallow: /422.htmlL12Already covered by "disallow: /422" on line 11disallow: /500.htmlL14Already covered by "disallow: /500" on line 13