Error : frame numbers are not consistent

Dear organizers,
we get “Error : frame numbers are not consistent” for our submissions. We tried to submit the original unmodified file, and get the same error message. Could you please check what the issue is?

Also, is it possible to ignore failed submissions in the 5 submissions a day limit?

The original file does not contain any predictions. To see how to write the predictions to a given test file, refer to the following sample Input and Output files.