UserManager의 연결 오류 CreateAsync

UserManager CreateAsync 메서드를 사용하여 새 사용자를 만들려고 할 때 다음 오류가 발생합니다. 나는 수정되지 않은 IdentityUser와 IdentityRole을 사용하고있다. 데이터베이스의 데이터로 채워지는 DB 세트가 몇 개 있습니다. 따라서 독서가 문제가되지 않습니다. 글을 쓰는 것만 같습니다.

    {System.InvalidOperationException: Connection must be valid and open to commit transaction at MySql.Data.MySqlClient.MySqlTransaction.Commit()
   at Microsoft.EntityFrameworkCore.Storage.RelationalTransaction.Commit()
   at Microsoft.EntityFrameworkCore.Update.Internal.BatchExecutor.<ExecuteAsync>d__10.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<SaveChangesAsync>d__54.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.EntityFrameworkCore.ChangeTracking.Internal.StateManager.<SaveChangesAsync>d__52.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.EntityFrameworkCore.DbContext.<SaveChangesAsync>d__35.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Identity.EntityFrameworkCore.UserStore`9.<CreateAsync>d__36.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Identity.UserManager`1.<CreateAsync>d__68.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at Microsoft.AspNetCore.Identity.UserManager`1.<CreateAsync>d__73.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
   at Controllers.Auth.AuthController.<Register>d__9.MoveNext() in AuthController.cs:line 102}

나는 사용하고있다;

• MySQL 엔터티 프레임 워크 코어 7.0.7-m61
• 비주얼 스튜디오 2017
• ASP.NET 코어 MVC 1.1.0
• 신원 1.1

오류에서 언급 한 102 행은 var result = userManager.CreateAsync (newUser, model.Password)를 기다리고 있습니다.

        [HttpPost]
        public async Task<ActionResult>Register(RegisterViewModel model)
        {
            try
            {
                if (ModelState.IsValid)
                {
                    var newUser = new IdentityUser
                    {
                        Email = model.Email,
                        UserName = model.Username
                    };

                    var result = await _userManager.CreateAsync(newUser, model.Password);

                    if (result.Succeeded)
                    {
                        await _signInManager.SignInAsync(newUser, false);
                        _logger.LogInformation($"New user account created: {model.Username}");

                        return RedirectToAction("Index", "App");
                    }

                    _logger.LogError($"Registration failed for {model.Username}: ", result.Errors);

                    return View(model);
                }

                return View(model);
            }
            catch (Exception ex)
            {
                _logger.LogError("Database Failure: ", ex);
                return View(model);
            }
        }

나는 asp.net을 배우고있어 기본 연결 문제 인 것처럼 보이는 명백한 오류가 있지만 데이터베이스가 IdentityManagerontext를 사용하여 쿼리 할 수 ​​있지만 UserManager를 통해 쿼리 할 수는 없다는 점에서 내가 바라는 바에 대한 걸림돌은 분명한 오류입니다. 내 이해에서는 IdentityDBContext 연결을 사용합니다.