The end is in sight. There are two problems with the pacing that can occur. One is to finish in a rush and the second it to keep ending and ending.
The rush job. Going from the Black Moment to the Resolution to the end is done as quickly as the writer can manage. This may leave the reader breathless but also unsatisfied. The black moment should be played out to the end when the character fears all is lost. Then comes the resolution when they decide what they must do to grasp the satisfactory ending. Then the end can come.
The not wanting to say good bye. Here the writer has become so enamored of the characters, they don't want to let go. Sometimes they might write several endings telling the reader what happens next beyond the solving of the problems. Some times In romances, I've seen endings that are a chapter or more in length. The reader might close the book and thing, glad it's over.
So finding the right way to end a book leaves the reader reaching for the writer's next book.