I don't think the parent was suggesting that there's anything wrong with what you wrote in that paragraph. At least IMO that counts as handling the error, vs. just doing nothing and assuming everything is ok. If you have to kick it back to the user and say "sorry, XYZ happened, and there's nothing I can do about it", that absolutely counts as handling the error. Not handling it would be just assuming the file got written properly to disk and then later having to deal with corrupt data.