参数 1：无法从“System.Collections.Generic.List<QbInvoiceViewModel>”转换为“QbInvoiceViewModel”

如何解决参数 1：无法从“System.Collections.Generic.List<QbInvoiceViewModel>”转换为“QbInvoiceViewModel”

int totalCount = 3;
            string query = string.Empty;
            for (int i = -1; i < totalCount-1; i++)
            {
                query = $"STARTPOSITION {(i+1) * 3 + 1} MAXRESULTS {3}";
                qurerCount.Add(query);
                foreach (var item in qurerCount)
                {                    
                    string uri11 = datasource.Uri + $"/v3/company/query?minorversion={datasource.Version}&query="SELECT Balance FROM Invoice WHERE "+ item;
                    List<QbInvoiceviewmodel> invoiceData = await qbService.GetInvoiceDetailsAsync(uri11,companyId,datasource);
                    List<QbInvoiceviewmodel> listStart = new List<QbInvoiceviewmodel>();
                    invoiceData.Add(listStart);
                }
            }
            return qurerCount;

这段代码给了我上面的错误。有人能帮我解决这个问题吗？