Download Submitted Data to CSV File Not Working

I’m trying to download a form’s submitted data to a CSV file, but nothing is happening. A wee ‘Click Here to Download’ link appears after hitting the blue ‘Download’ button, but the screen just goes white.

I’ve contacted you before as I have WP installed on a closed network (no internet access). I had to install the Scriptaculous files locally.

Are there any further links to files that should be stored locally? Aside from this issue, the form is working perfectly. But it is essential that I am able to export submitted data to my users.

Thanks,
Karen

https://www.ads-software.com/plugins/wordpress-form-manager/