My actions before raising this issue

• Read/searched the docs
• Searched past issues

Expected Behaviour

Import Dataset successful.

Current Behaviour

cannot import and feedback:
Could not import dataset to the project 298
Error: Request failed with status code 500. "ValueError: not enough values to unpack (expected 2, got 1)\n".

Possible Solution

check code and detail logs from server side.

Steps to Reproduce (for bugs)

1. export dataset for image classification by ImageNet format. prepare dataset like: https://drive.google.com/file/d/1dj7CSoWi2MIIunYFlhHNoqeQnqjXFoZd/view?usp=sharing
2. import dataset into another project.

Your Environment

app.cvat.ai
and localhost CVAT v2.1.0

Issue by @deryann