Read it through once
You will find a lot of these kinds of "errors" in this text, as I have mentioned in other times and places, many "scholars" have an extreme attachment to these errors, and many have accorded them a very high place in the "canon" of Shakespeare. My father read an assortment of these made available to him by Cambridge University in England for several months in a glass room constructed for the purpose. To the best of my knowledge he read ALL those available . . .in great detail. . .and determined from the various changes, that Shakespeare most likely did not write in nearly as many of a variety of errors we credit him for, even though he was in/famous for signing his name with several different spellings.