Ссылку ограничения «строка» не удалось преобразовать в тип. (netcoreapp3.0) ⇐ C#

[Anonymous]

У меня возникла ошибка. Это мой курс по стартапам.

public void ConfigureServices(IServiceCollection services)
{
services.AddControllers();
}

public void Configure(IApplicationBuilder app)
{
app.UseDeveloperExceptionPage();

app.UseRouting();
app.UseEndpoints(endpoints =>
{
endpoints.MapControllers();
});
}


Текущая технология «netcoreapp3.0» и мой контроллер.

[Route("api/[controller]")]
[ApiController]
public class ExampleController : ControllerBase
{
[HttpGet("request")]
public ActionResult Index()
{
return Ok();
}
}


И вот моя ошибка. Я не нашел решения, даже не понял, что именно это такое. Итак, мы здесь.

System.InvalidOperationException: The constraint reference 'string' could not be resolved to a type. Register the constraint type with 'Microsoft.AspNetCore.Routing.RouteOptions.ConstraintMap'.
at Microsoft.AspNetCore.Routing.DefaultParameterPolicyFactory.Create(RoutePatternParameterPart parameter, String inlineText)
at Microsoft.AspNetCore.Routing.ParameterPolicyFactory.Create(RoutePatternParameterPart parameter, RoutePatternParameterPolicyReference reference)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.CreateCandidate(Endpoint endpoint, Int32 score)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.CreateCandidates(IReadOnlyList`1 endpoints)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.g__Transition|19_0(DfaNode next, c__DisplayClass19_0& )
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.AddNode(DfaNode node, DfaState[] states, Int32 exitDestination)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherBuilder.Build()
at Microsoft.AspNetCore.Routing.Matching.DataSourceDependentMatcher.CreateMatcher(IReadOnlyList`1 endpoints)
at Microsoft.AspNetCore.Routing.DataSourceDependentCache`1.Initialize()
at System.Threading.LazyInitializer.EnsureInitializedCore[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
at System.Threading.LazyInitializer.EnsureInitialized[T](T& target, Boolean& initialized, Object& syncLock, Func`1 valueFactory)
at Microsoft.AspNetCore.Routing.Matching.DataSourceDependentMatcher..ctor(EndpointDataSource dataSource, Lifetime lifetime, Func`1 matcherBuilderFactory)
at Microsoft.AspNetCore.Routing.Matching.DfaMatcherFactory.CreateMatcher(EndpointDataSource dataSource)
at Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.InitializeCoreAsync()
--- End of stack trace from previous location where exception was thrown ---
at Microsoft.AspNetCore.Routing.EndpointRoutingMiddleware.g__AwaitMatcher|8_0(EndpointRoutingMiddleware middleware, HttpContext httpContext, Task`1 matcherTask)
at Microsoft.AspNetCore.Diagnostics.DeveloperExceptionPageMiddleware.Invoke(HttpContext context)


РЕДАКТИРОВАТЬ: Вот мои зависимости. Когда я их удалил, все заработало.





all
runtime; build; native; contentfiles; analyzers; buildtransitive



all
runtime; build; native; contentfiles; analyzers; buildtransitive











Подробнее здесь: https://stackoverflow.com/questions/592 ... etcoreapp3