New version of dataset isn`t deleted

Steps:

1. Go to "https://sandbox.genesys-pgr.org/dashboard/datasets" as admin user.
2. Click on "Create new version" button for any dataset.
3. Click "Back" button.
4. Click "Edit" button.
5. Select check box for created dataset.
6. Click "Delete selected" button.

Expected result: selected dataset should be deleted.

Actual result: Request failed with status code 400 could not execute batch;

You can fix it after reload the page.

but dataset "https://sandbox.genesys-pgr.org/dashboard/datasets/522854e3-0eae-4072-9d83-9f9ee6dd27b8/edit" can`t delete permanently.