Erro ao retornar a IActionResult RecuperaSessaoPorId

Esse erro é meio estranho, porque ele não me dá o retorno do Json com a criação e o status 200 ok, porém a Sessão é criada. Ao consultar a Sessão o Json vem normalmente.

Metodo de criação.

        [HttpPost]
        public IActionResult AdicionaSessao(CreateSessaoDto dto)
        {
            Sessao sessao = _mapper.Map<Sessao>(dto);
            _context.Sessoes.Add(sessao);
            _context.SaveChanges();
            return CreatedAtAction(nameof(RecuperaSessaoPorId), new { id = sessao.Id, sessao });
        }

Metodo de Recuperação

        [HttpGet("{id}")]
        public IActionResult RecuperaSessaoPorId(int id)
        {
            Sessao sessao = _context.Sessoes.FirstOrDefault(sessao => sessao.Id == id);
            if (sessao != null)
            {
                ReadSessaoDto sessaoDto = _mapper.Map<ReadSessaoDto>(sessao);

                return Ok(sessaoDto);
            }
            return NotFound();
        }

Erro no PostMan (Só achei a descrição do erro no PostMan)

System.InvalidOperationException: No route matches the supplied values.
   at Microsoft.AspNetCore.Mvc.CreatedAtActionResult.OnFormatting(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ObjectResultExecutor.ExecuteAsyncCore(ActionContext context, ObjectResult result, Type objectType, Object value)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ObjectResultExecutor.ExecuteAsync(ActionContext context, ObjectResult result)
   at Microsoft.AspNetCore.Mvc.ObjectResult.ExecuteResultAsync(ActionContext context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultAsync(IActionResult result)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeNextResultFilterAsync[TFilter,TFilterAsync]()
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.Rethrow(ResultExecutedContextSealed context)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.InvokeResultFilters()
--- End of stack trace from previous location ---
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeFilterPipelineAsync>g__Awaited|19_0(ResourceInvoker invoker, Task lastTask, State next, Scope scope, Object state, Boolean isCompleted)
   at Microsoft.AspNetCore.Mvc.Infrastructure.ResourceInvoker.<InvokeAsync>g__Awaited|17_0(ResourceInvoker invoker, Task task, IDisposable scope)
   at Microsoft.AspNetCore.Routing.EndpointMiddleware.<Invoke>g__AwaitRequestTask|6_0(Endpoint endpoint, Task requestTask, ILogger logger)
   at Microsoft.AspNetCore.Authorization.AuthorizationMiddleware.Invoke(HttpContext context)
   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

HEADERS
=======
Connection: keep-alive
Content-Type: application/json
Accept: */*
Accept-Encoding: gzip, deflate, br
Host: localhost:5001
Referer: http://localhost:5000/sessao/
User-Agent: PostmanRuntime/7.29.2
Content-Length: 96
Postman-Token: c0fad2b4-78d1-49bc-b715-bf9eb57c3339

PostMan com o retorno da Sessão criada.

Json do retorno do Get.

{
    "id": 1,
    "cinema": {
        "id": 1,
        "nome": "CineZika",
        "endereco": {
            "id": 1,
            "logradouro": "Avenida dos Zikas",
            "bairro": "Jd. Villas dos Zikis",
            "numero": 305
        },
        "enderecoId": 1,
        "gerente": {
            "id": 1,
            "nome": "Igor Zika"
        },
        "gerenteId": 1
    },
    "filme": {
        "id": 1,
        "titulo": "Filme Zika",
        "duracao": 120,
        "diretor": "Zika Jackson",
        "genero": "Avantura",
        "classificacaoEtaria": 14
    },
    "horarioDeEncerramento": "2022-01-01T21:00:00",
    "horarioDeInicio": "2022-01-01T19:00:00"
}