Typically, this means there's nothing to load from the file. Can you provide an example of your data? You can remove any sensitive data. It's common like the answers below to have a small mistake in your input data.
Unfortunately there are 44 issues that mention a similar error so there could a variety of issues.
Let me know if you can provide an example and then we can go from there. Also, let us know if you can do logging and provide back any details.