My submission always failed, and I inspected it and check the file. Why?

[oh-my-uni]

https://cellmapchallenge.janelia.org/versions/94
Is is possible to know the fail reason?

[rhoadesScholar]

@oh-my-uni Here is the final error message for the submission:

ValueError: No volumes found to score. Make sure the submission is formatted correctly.

What is the command(s) you are using to package the submission for upload?

[oh-my-uni]

submission.py
I use this file to change some nii.gz file to the final result. I tried to submit a file only contains a crop and an class, but it still failed.

[rhoadesScholar]

@oh-my-uni Can you post the file tree structure of the submission before it was zipped? It needs to follow the structure described in the docs.