Erro ao fazer a requisição para imagem vazia de capa

Quando faço a requisição tanto pelo Postman quanto pela aplicação não consigo receber a imagem capa-vazia.png.

URI: http://localhost:6000/api/livros/4011/capa

[HttpGet("{id}/capa")] public IActionResult ImagemCapa(int id) { byte[] img = _repo.All .Where(l => l.Id == id) .Select(l => l.ImagemCapa) .FirstOrDefault(); if (img != null) { return File(img, "image/png"); } return File("~/images/capas/capa-vazia.png", "image/png"); }

Pela aplicação, não traz a imagem e pelo Postman apresenta o seguinte erro:

Erro: 500 Internal Server Error

System.InvalidOperationException: No file provider has been configured to process the supplied file. at Microsoft.AspNetCore.Mvc.Infrastructure.VirtualFileResultExecutor.GetFileInformation(VirtualFileResult result) at Microsoft.AspNetCore.Mvc.Infrastructure.VirtualFileResultExecutor.ExecuteAsync(ActionContext context, VirtualFileResult result) at Microsoft.AspNetCore.Mvc.VirtualFileResult.ExecuteResultAsync(ActionContext context) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultAsync(IActionResult result) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResultFilterAsyncTFilter,TFilterAsync at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResultExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.ResultNext[TFilter,TFilterAsync](State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeResultFilters() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeNextResourceFilter() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Rethrow(ResourceExecutedContext context) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.Next(State& next, Scope& scope, Object& state, Boolean& isCompleted) at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeFilterPipelineAsync() at Microsoft.AspNetCore.Mvc.Internal.ResourceInvoker.InvokeAsync() at Microsoft.AspNetCore.Builder.RouterMiddleware.Invoke(HttpContext httpContext) at Microsoft.AspNetCore.Authentication.AuthenticationMiddleware.Invoke(HttpContext context) at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)

Preciso colocar alguma outra configuração no retorno return File("~/images/capas/capa-vazia.png", "image/png"); ?