Retorno 500 do Postman/Swagger após gravação no BD.

Olá, estou recebendo uma mensagem de erro, tanto no swagger quanto no postman após Executar um novo cadastro no banco.

PS: Os dados são gravados normalmente no banco, mesmo assim recebo um status code "500". Fiz até um outro projeto em paralelo com o do curso, mesmo assim recebo o mesmo erro.

Mensagem de erro {Swagger}:

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|20_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.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 Swashbuckle.AspNetCore.SwaggerUI.SwaggerUIMiddleware.Invoke(HttpContext httpContext)

   at Swashbuckle.AspNetCore.Swagger.SwaggerMiddleware.Invoke(HttpContext httpContext, ISwaggerProvider swaggerProvider)

   at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)



HEADERS

=======

Accept: */*

Host: localhost:7166

User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:109.0) Gecko/20100101 Firefox/115.0

:method: POST

Accept-Encoding: gzip, deflate, br

Accept-Language: en-US,en;q=0.5

Content-Type: application/json

Origin: https://localhost:7166

Referer: https://localhost:7166/swagger/index.html

TE: trailers

Content-Length: 258

sec-fetch-dest: empty

sec-fetch-mode: cors

sec-fetch-site: same-origin

Além disso, tentei reescrever o método AdicionarFilme/AdicionarPessoa, ambos os projetos, continuou funcionando normalmente, e com a mesma mensagem de erro...

Método antigo:

[HttpPost]
    public IActionResult AdicionarPessoa([FromBody] Pessoa pessoa)
    {
        pessoa.SetPessoaId();
        _context.Pessoas.Add(pessoa);
        _context.SaveChanges();
        return CreatedAtAction(nameof(RecuperaPessoaCadastrada),
            new { id = pessoa.PessoaId },
            pessoa);
    }

Método reescrito:

[HttpPost]
    public IActionResult AdicionarPessoa([FromBody] Pessoa pessoa)
    {
        pessoa.SetPessoaId();
        _context.Pessoas.Add(pessoa);
        _context.SaveChanges();
        return RecuperaPessoaCadastrada(pessoa.PessoaId);
    }

embora esteja funcionando, acredito que não deveria receber a mensagem de erro acima quando eu faço o /Post.