In to kill a mocking bird who did jem invite home for dinner

she invites Walter over, jem shows his maturity here because he has learned the lesson that Atticus has tried to teach Scout: Look at the situation from the other person's point of view.

type of error:

the error in the sentence is a "dangling modifier". a dangling modifier is a phrase, word or clause that "dangles" because there is not target to modify. in this case, "after mopping the floor" is the dangling modifier since it has no word to modify. the noun "house" cannot mop the floor; therefore there is a mistake in the writing of the sentence.