This is a Sitecore 8.1 Update 2 installation. I'm getting the errors that are described in this blog post when I try to view the form reports: http://blog.ryanbailey.co.nz/2017/09/sitecore-wffm-form-reports-are-empty.html. It's the triple set of errors, one of which includes
The parameters dictionary contains a null entry for parameter 'id' of non-nullable type 'System.Guid' for method 'System.Web.Mvc.ActionResult GetFormFieldsStatistics(System.Guid)' in 'Sitecore.WFFM.Services.Requests.Controllers.FormReportsController'. An optional parameter must be a reference type, a nullable type, or be declared as an optional parameter. Parameter name: parameters
This is a standalone development machine for now, but in production the CM would be the reporting server as well (it's a 1 CM/2 CD model). Looking at the referenced blog, I confirmed I have the four Sitecore items present, and I have run the SQL script to create the objects in my Sitecore reporting database. I haven't changed any of the default configurations, so it's using the analytics form provider, but this client license doesn't have xDB enabled. In this case, do I need to switch to the SQL form provider instead to capture the data in the form reports?