ASP.NET MVC 5 Data is NULL Due To Network Related Instance

I am getting the value from text field but can not find the reason of not getting saved in the variable.

var user = new ApplicationUser() { UserName = model.Email ,Email = model.Email};

user is null despite Email contains the value. I have found it through debugging.

{
Line 81:       var user = new ApplicationUser() { UserName = model.Email ,Email = model.Email};

Line 82:       var result = await UserManager.CreateAsync(user, model.Password);
Line 83:       if (result.Succeeded)
Line 84:       {

Line 82 is the error. Below is the code.

var user = new ApplicationUser() { UserName = model.Email ,Email = model.Email};

var result = await UserManager.CreateAsync(user, model.Password);
if (result.Succeeded)
{
    var db = new ApplicationDbContext();
    var checkingAccount = new CheckingAccount
    {
        FirstName = model.FirstName,
        LastName = model.LastName,
        AccountNumber = "111014005",
        Balance = 0,
        ApplicationUserId = user.Id

    };
    db.CheckingAccounts.Add(checkingAccount);
    db.SaveChanges();

Stack Trace:

[Win32Exception (0x80004005): The system cannot find the file specified]

[SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)]

System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, UInt32 waitForMultipleObjectsTimeout, Boolean allowCreate, Boolean onlyOneCheckConnection, DbConnectionOptions userOptions, DbConnectionInternal& connection) +414
System.Data.ProviderBase.DbConnectionPool.TryGetConnection(DbConnection owningObject, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal& connection) +78
System.Data.ProviderBase.DbConnectionFactory.TryGetConnection(DbConnection owningConnection, TaskCompletionSource1 retry, DbConnectionOptions userOptions, DbConnectionInternal oldConnection, DbConnectionInternal& connection) +196
System.Data.ProviderBase.DbConnectionInternal.TryOpenConnectionInternal(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) +146
System.Data.ProviderBase.DbConnectionClosed.TryOpenConnection(DbConnection outerConnection, DbConnectionFactory connectionFactory, TaskCompletionSource1 retry, DbConnectionOptions userOptions) +16
System.Data.SqlClient.SqlConnection.TryOpenInner(TaskCompletionSource1 retry) +94
System.Data.SqlClient.SqlConnection.TryOpen(TaskCompletionSource1 retry) +110 System.Data.SqlClient.SqlConnection.Open() +96
System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.b__36(DbConnection t, DbConnectionInterceptionContext c) +10
System.Data.Entity.Infrastructure.Interception.InternalDispatcher1.Dispatch(TTarget target, Action2 operation, TInterceptionContext interceptionContext, Action3 executing, Action3 executed) +72
System.Data.Entity.Infrastructure.Interception.DbConnectionDispatcher.Open(DbConnection connection, DbInterceptionContext interceptionContext) +360
System.Data.Entity.SqlServer.<>c__DisplayClass33.b__32() +426 System.Data.Entity.SqlServer.<>c__DisplayClass1.b__0() +10
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Func1 operation) +189
System.Data.Entity.SqlServer.DefaultSqlExecutionStrategy.Execute(Action operation) +78
System.Data.Entity.SqlServer.SqlProviderServices.UsingConnection(DbConnection sqlConnection, Action1 act) +175
System.Data.Entity.SqlServer.SqlProviderServices.UsingMasterConnection(DbConnection sqlConnection, Action1 act) +557
System.Data.Entity.SqlServer.SqlProviderServices.CreateDatabaseFromScript(Nullable1 commandTimeout, DbConnection sqlConnection, String createDatabaseScript) +86
System.Data.Entity.SqlServer.SqlProviderServices.DbCreateDatabase(DbConnection connection, Nullable1 commandTimeout, StoreItemCollection storeItemCollection) +164
System.Data.Entity.Core.Common.DbProviderServices.CreateDatabase(DbConnection connection, Nullable1 commandTimeout, StoreItemCollection storeItemCollection) +76
System.Data.Entity.Core.Objects.ObjectContext.CreateDatabase() +134
System.Data.Entity.Migrations.Utilities.DatabaseCreator.Create(DbConnection connection) +119
System.Data.Entity.Migrations.DbMigrator.EnsureDatabaseExists(Action mustSucceedToKeepDatabase) +142
System.Data.Entity.Migrations.DbMigrator.Update(String targetMigration) +78
System.Data.Entity.Internal.DatabaseCreator.CreateDatabase(InternalContext internalContext, Func3 createMigrator, ObjectContext objectContext) +89 System.Data.Entity.Internal.InternalContext.CreateDatabase(ObjectContext objectContext, DatabaseExistenceState existenceState) +116
System.Data.Entity.Database.Create(DatabaseExistenceState existenceState) +218
System.Data.Entity.CreateDatabaseIfNotExists1.InitializeDatabase(TContext context) +149
System.Data.Entity.Internal.<>c__DisplayClassf1.<CreateInitializationAction>b__e() +76 System.Data.Entity.Internal.InternalContext.PerformInitializationAction(Action action) +60
System.Data.Entity.Internal.InternalContext.PerformDatabaseInitialization() +357 System.Data.Entity.Internal.LazyInternalContext.<InitializeDatabase>b__4(InternalContext c) +7
System.Data.Entity.Internal.RetryAction1.PerformAction(TInput input) +110 System.Data.Entity.Internal.LazyInternalContext.InitializeDatabaseAction(Action1 action) +198
System.Data.Entity.Internal.LazyInternalContext.InitializeDatabase() +73 System.Data.Entity.Internal.InternalContext.GetEntitySetAndBaseTypeForType(Type entityType) +28
System.Data.Entity.Internal.Linq.InternalSet1.Initialize() +53
System.Data.Entity.Internal.Linq.InternalSet1.get_InternalContext() +15 System.Data.Entity.Infrastructure.DbQuery1.System.Linq.IQueryable.get_Provider() +38 System.Data.Entity.QueryableExtensions.FirstOrDefaultAsync(IQueryable1 source, Expression1 predicate, CancellationToken cancellationToken) +138 System.Data.Entity.QueryableExtensions.FirstOrDefaultAsync(IQueryable1 source, Expression1 predicate) +133
Microsoft.AspNet.Identity.EntityFramework.d__6c.MoveNext() +486 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 Microsoft.AspNet.Identity.CultureAwaiter1.GetResult() +59 Microsoft.AspNet.Identity.<ValidateUserName>d__4.MoveNext() +592 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 Microsoft.AspNet.Identity.<ValidateAsync>d__0.MoveNext() +283 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 Microsoft.AspNet.Identity.<CreateAsync>d__0.MoveNext() +582 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 Microsoft.AspNet.Identity.<CreateAsync>d__d.MoveNext() +531 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52 System.Runtime.CompilerServices.TaskAwaiter1.GetResult() +24 AutomatedTellerMachine.Controllers.d__9.MoveNext() in e:\Passion\Work\AutomatedTellerMachine\AutomatedTellerMachine\Controllers\AccountController.cs:82 System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task) +93
System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task) +52
System.Web.Mvc.Async.TaskAsyncActionDescriptor.EndExecute(IAsyncResult asyncResult) +84
System.Web.Mvc.Async.<>c__DisplayClass37.b__36(IAsyncResult asyncResult) +17
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethod(IAsyncResult asyncResult) +32
System.Web.Mvc.Async.AsyncInvocationWithFilters.b__3d() +50 System.Web.Mvc.Async.<>c__DisplayClass46.b__3f() +225 System.Web.Mvc.Async.<>c__DisplayClass33.b__32(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeActionMethodWithFilters(IAsyncResult asyncResult) +34
System.Web.Mvc.Async.<>c__DisplayClass2b.b__1c() +26 System.Web.Mvc.Async.<>c__DisplayClass21.b__1e(IAsyncResult asyncResult) +100
System.Web.Mvc.Async.WrappedAsyncResult1.CallEndDelegate(IAsyncResult asyncResult) +10
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +49
System.Web.Mvc.Async.AsyncControllerActionInvoker.EndInvokeAction(IAsyncResult asyncResult) +27
System.Web.Mvc.Controller.b__1d(IAsyncResult asyncResult, ExecuteCoreState innerState) +13
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +54
System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +39 System.Web.Mvc.Controller.b__15(IAsyncResult asyncResult, Controller controller) +12
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +28
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +54
System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +29
System.Web.Mvc.Controller.System.Web.Mvc.Async.IAsyncController.EndExecute(IAsyncResult asyncResult) +10
System.Web.Mvc.MvcHandler.b__5(IAsyncResult asyncResult, ProcessRequestState innerState) +21
System.Web.Mvc.Async.WrappedAsyncVoid1.CallEndDelegate(IAsyncResult asyncResult) +36
System.Web.Mvc.Async.WrappedAsyncResultBase1.End() +54
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +31 System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +9514812 System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)

The stack trace shows that your application cannot connect to your database:

SqlException (0x80131904): A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible. Verify that the instance name is correct and that SQL Server is configured to allow remote connections. (provider: SQL Network Interfaces, error: 52 - Unable to locate a Local Database Runtime installation. Verify that SQL Server Express is properly installed and that the Local Database Runtime feature is enabled.)

Note the highlighted section: This indicated that you don't have LocalDb installed. Either install it or change your connection string to point to a database that does exist.