The uploaded file appears to be empty or contains only whitespace. This raises a specific issue based on the hint provided.

Let's identify the issues in the required format.

```json
{
    "issue": "File contains no data",
    "evidence": "''",
    "description": "The uploaded file is empty, which means it lacks any data or information that should be present."
}
```

This indicates that the file does not fulfill the necessary requirements for a dataset, as it contains no actual data.