How do I export complex data from a lens

[ekazda]

I have a fairly sophisticated lens that queries my database and pulls back per month purchase history for every buyer based on a date span and a list of buyer IDs provided. I have my lens displaying this information correctly. Because of the nature of the query and export desire, I have the DownloadExcel set up in this fashion:

public function actions(NovaRequest $request)
{
    return [
        (new DownloadExcel())
            ->withChunkCount(false)
            ->standalone()
            ->withHeadings(),
    ];
}

This adds the ... to the top right of my page and allows me to select my action. It also seems to run my query correctly. However, it always downloads a completely empty excel file.

I can try to share more code, but why is my excel file completely empty when my lens is clearly showing the right data?