Error when clearing exports directory from settings

Hitting the “clear now” button produces this error:

Fatal error: Call to a member function is_file() on a non-object in /var/sites/v/vangoyourself.com/public_html/wp-content/plugins/exports-and-reports/exports-and-reports.php on line 1148

We are also having the problem (that others are reporting in this support forum) that trying to export a CSV file results in a “file not found”

Your excellent plugin has been very useful for our client, so anything you can do to restore functionality will be very greatly appreciated indeed.

Thanks

Peter

https://wordpress.org/plugins/exports-and-reports/