Fatal error: Uncaught ValueError: max(): Argument #1 ($value) must contain at least one element in /home/manabitaizen/manabitaizen.com/components/quiz-system.php:41
Stack trace:
#0 /home/manabitaizen/manabitaizen.com/components/quiz-system.php(41): max(Array)
#1 /home/manabitaizen/manabitaizen.com/public_html/workbooks/math1/chapter2/quizzes/quiz1.php(10): include('/home/manabitai...')
#2 {main}
thrown in /home/manabitaizen/manabitaizen.com/components/quiz-system.php on line 41