Specifi QUiz modules were not working

In courses we had created a dynamic quiz in that create quiz question it shows to choose what type of the question is like true or false, multiple choice, short answer , In total we had 9 types of question types in that we had created quiz with each one type of question and assigned to a student. The issue is: when student tries to take a quiz it only show some questions and for some it shows black question and clicking on some questions it redirects to an blank page Please view the attached screenshot : http://edulot.stbrittosacademy.edu.in/wp-content/uploads/2021/05/Screenshot-364.png http://edulot.stbrittosacademy.edu.in/wp-content/uploads/2021/05/Screenshot-365.png http://edulot.stbrittosacademy.edu.in/wp-content/uploads/2021/05/Screenshot-365.png student account: https://edulot.stbrittosacademy.edu.in course name will be : IV-B Computer Science quiz HTML