I have poste an auxilary chapter which is FREE to read for the real chapter 417. For those that still see duplicate for chapter 417 and 418.
Again, I am very sorry for this. This will not happen again.
There could be some sunchronization error for the previous chapter. For me, I am seeing my corrected mistake. Please tell me if it is still not visible. Then I will just adjust this chapter to see the previous one.