InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException

Question

I am testing a Web Core API and I am getting a 500 Internal Server error. My method on my controller is;

[Route("api/property")]
public class PropertyController : BaseSirController
{

    [HttpPost("{contractId}/saveproperty")]
    public IActionResult SaveProperty(int contractId, [FromBody] PropertyContractDto property)
    {
        if (property == null)
        {
            return BadRequest();
        }

        if (contractId == 0)
        {
            return NotFound();
        }

        return Ok();
        //return CreatedAtRoute("GetPropertyInspectionsForContract", new {contractId = contractId}, properties);
    }

and in my POwershell command I enter:

Invoke-RestMethod http://localhost:17972/api/property/7/saveproperty -Method POST -Body (@{UPRN="1244"; StreetName="The Street"; AddressLine2="ALine2"; AddressLine3="ALine3"; AddressLine4="ALine4"; Postcode="N1 7PL"; Latitude="23"; Longitude="77"; BlockUPRN="B1244"; PropertyNo="23"; BlockName="Wenlock Court"; Comments="blah blah blah"; PropertyTypeId="1"; NumberOfBathrooms="1"; NumberOfBedrooms="2"; NumberOfKitchens="1"; PropertyContractId="23"; PropertyType="Maisonette"} | ConvertTo-Json) -ContentType "application/json"

The error message I am getting is;

Invoke-RestMethod : The remote server returned an error: (500) Internal Server Error.
At line:1 char:1
+ Invoke-RestMethod http://localhost:17972/api/property/7/saveproperty -Method POS ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand

I cannot work out how to fix this.

Answer 1

I found the problem was in my Startup.cs, ConfigureServices method. If I put in services.AddMvcCore().AddJsonFormatters(); it works