Problem with C3 W2 GRADED ASSIGNMENT LOADED DICE

I am getting only 19 % in that assignment even though I have attempted all exercises correctly, getting error in all exercises likebelow
Failed test case: malformed submission for exercise

I tried with " utils.reset_answers() ", then saved all answers , still I am not able to clear this
please help me

Hi @Somasekhar_Donthu!

Can you doublecheck that you have not changed your notebook file?

Thanks,
Lucas