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:

[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 type:

 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 get 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 can’t figure out how to fix this.

Answer 1

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