Well, a given error may not necessarily be a bad thing and it depends on the code which is associated with it. If it's 0x80070002 for example it means DISM couldn't find the file. It depends then on what it's called and whether it's a driver or not.
You could make a cursory check of the first 25 errors identified and see what the code and name of each file is. Check the error codes against those listed in this Microsoft document about halfway down the page.