Error when submitting the QUIZ

Hi

I keep getting this problem. Is this the connecting problem or my code problem?
image

Hello @youngyangcs,

We have experienced an error in our autocorrection system, which has already been solved. Can you please try to correct your Quiz again? If you still get errors, let us know so that we can check your specific case. Our sincere apologies for the inconvenience.

Best,

i am also getting this error…