It appears that there are some shiurim missing between #49 and #50. Looking at TorahAnytime.com, I see 3 shiurim between #49 (5/6/18) and #50 (10/7/18): https://www.torahanytime.com/#/speaker?l=786&search=yosef&filter=%7B%22search%22%3A%7B%22type%22%3A%22title%22%2C%22term%22%3A%22yosef%22%7D%7D https://www.torahanytime.com/#/lectures?a=61039 https://www.torahanytime.com/#/lectures?a=62420 https://www.torahanytime.com/#/lectures?a=64020 It would probably be good for the series on YUTorah.org to be complete since not everyone will know where to find the missing shiurim.