I'm using QGIS 2.18.10, and I have an ArcGIS server feature layer pulled up that I would like to save locally to my hard drive for editing purposes.

The remote layer with which I am working is the polygon layer available at https://mapservices.nps.gov/arcgis/rest/services/cultural_resources/nrhp_locations/MapServer.

When I right click on the layer in the Layers Panel in QGIS and try to save it as a shapefile, I get an error stating the following:

Export to vector file failed. Error: Feature write errors: Invalid variant type for field Shape_Area[34]: received QByteArray with type......

The Shape_Area field in the source layer is formatted as double. I'm having trouble understanding what's causing this issue.

Can anyone shed some light on this?