Throws exception on cold start

#### Investigative information

- Timestamp: 2021-06-17T10:56:29.944
- Function App version: 3
- Function App name:
- Function name(s) (as appropriate): messages
- Invocation ID: dcaee1ff-d8c1-43e8-af85-fba28541c495
- Region: West India
- Plan: Consumption

#### Repro steps

1. When we restart function app from azure portal console, it works
2. But after some time, when we invoke the function by sending an http request to messages endpoint, it fails with an exception

#### Expected behavior

It should execute the function after cold start, as it does when restarted from portal console

#### Actual behavior

Generally it fails with exception on cold start

#### Known workarounds

NA

#### Related information

* Programming language used : c#

The exception thrown indicates that this is a DI issue. So providing my startup code and the exception

Source

```csharp
public class Startup : FunctionsStartup {
public override void Configure(IFunctionsHostBuilder builder) {
builder.Services.AddBotRuntime(builder.GetContext().Configuration);

builder.Services
.AddSingleton((s) => new ShowTypingMiddleware(delay: 500));
var memoryStorage = new MemoryStorage();
var inspectionState = new InspectionState(memoryStorage);
var userState = new UserState(memoryStorage);
var conversationState = new ConversationState(memoryStorage);
builder.Services
.AddSingleton((s) => new InspectionMiddleware(inspectionState, userState, conversationState));
}

public override void ConfigureAppConfiguration(IFunctionsConfigurationBuilder configurationBuilder) {
FunctionsHostBuilderContext context = configurationBuilder.GetContext();

string applicationRoot = context.ApplicationRootPath;
string environmentName = context.EnvironmentName;
string settingsDirectory = "settings";

configurationBuilder.ConfigurationBuilder.AddBotRuntimeConfiguration(
applicationRoot,
settingsDirectory,
environmentName);
}
}
```

The exception thrown is:
```
2021-06-17T10:56:29.944 [Error] Executed 'messages' (Failed, Id=dcaee1ff-d8c1-43e8-af85-fba28541c495, Duration=2ms)System.NullReferenceException : Object reference not set to an instance of an object.at System.Linq.Expressions.Interpreter.CastInstruction.CastInstructionT`1.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.Interpreter.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.LightLambda.Run(Object[] arguments)at Thunk(Func`2 ,IResolverContext )at DryIoc.Factory.<>c__DisplayClass26_0.b__2() at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6605at DryIoc.Scope.TryGetOrAdd(ImMap`1 items,Int32 id,CreateScopedValue createValue,Int32 disposalOrder) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7849at DryIoc.Scope.GetOrAdd(Int32 id,CreateScopedValue createValue,Int32 disposalOrder) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7834at DryIoc.Factory.ApplyReuse(Expression serviceExpr,Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6604at DryIoc.Factory.GetExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6564at DryIoc.WrappersSupport.GetArrayExpression(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 2903at DryIoc.ExpressionFactory.CreateExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7699at DryIoc.Factory.GetExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6554at DryIoc.ReflectionFactory.CreateExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7083at DryIoc.Factory.GetExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6554at DryIoc.Factory.GetDelegateOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6634at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate(Type serviceType,IfUnresolved ifUnresolved) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 211at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType,IfUnresolved ifUnresolved) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 196at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetService(Type serviceType,IfUnresolved ifUnresolved) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs : 99at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.JobHostServiceProvider.GetRequiredService(Type serviceType) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\JobHostServiceProvider.cs : 82at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService(IServiceProvider provider,Type serviceType)at Microsoft.Extensions.DependencyInjection.ServiceProviderServiceExtensions.GetRequiredService[T](IServiceProvider provider)at Microsoft.Bot.Builder.Dialogs.Adaptive.Runtime.Extensions.ServiceCollectionExtensions.<>c.b__0_0(IServiceProvider sp)at DryIoc.Microsoft.DependencyInjection.DryIocAdapter.<>c__DisplayClass3_0.b__0(IResolverContext r) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\DryIocAdapter.cs : 156at DryIoc.Registrator.<>c__DisplayClass27_0.b__0(IResolverContext r) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 4550at System.Linq.Expressions.Interpreter.FuncCallInstruction`3.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.Interpreter.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.LightLambda.Run(Object[] arguments)at Thunk(Func`2 ,IResolverContext )at DryIoc.Factory.<>c__DisplayClass26_0.b__2() at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6605at DryIoc.Scope.TryGetOrAdd(ImMap`1 items,Int32 id,CreateScopedValue createValue,Int32 disposalOrder) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7849at DryIoc.Scope.GetOrAdd(Int32 id,CreateScopedValue createValue,Int32 disposalOrder) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7834at DryIoc.Factory.ApplyReuse(Expression serviceExpr,Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6604at DryIoc.Factory.GetExpressionOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6564at DryIoc.Factory.GetDelegateOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 6634at DryIoc.DelegateFactory.GetDelegateOrDefault(Request request) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 7740at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType,Object serviceKey,IfUnresolved ifUnresolved,Type requiredServiceType,Request preResolveParent,Object[] args) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 291at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw(Exception source)at System.Linq.Expressions.Interpreter.ExceptionHelpers.UnwrapAndRethrow(TargetInvocationException exception)at System.Linq.Expressions.Interpreter.MethodInfoCallInstruction.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.Interpreter.Run(InterpretedFrame frame)at System.Linq.Expressions.Interpreter.LightLambda.Run(Object[] arguments)at Thunk(Func`2 ,IResolverContext )at DryIoc.Container.ResolveAndCacheDefaultFactoryDelegate(Type serviceType,IfUnresolved ifUnresolved) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 225at DryIoc.Container.DryIoc.IResolver.Resolve(Type serviceType,IfUnresolved ifUnresolved) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\DryIoc\Container.cs : 196at Microsoft.Azure.WebJobs.Script.WebHost.DependencyInjection.ScopedServiceProvider.GetService(Type serviceType) at D:\a\1\s\src\WebJobs.Script.WebHost\DependencyInjection\ScopedServiceProvider.cs : 25at Microsoft.Extensions.DependencyInjection.ActivatorUtilities.GetService(IServiceProvider sp,Type type,Type requiredBy,Boolean isDefaultParameterRequired)at lambda_method(Closure ,IServiceProvider ,Object[] )at Microsoft.Azure.WebJobs.Host.Executors.DefaultJobActivator.CreateInstance[T](IServiceProvider serviceProvider) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\DefaultJobActivator.cs : 42at Microsoft.Azure.WebJobs.Host.Executors.DefaultJobActivator.CreateInstance[T](IFunctionInstanceEx functionInstance) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\DefaultJobActivator.cs : 32at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory`1.<>c__DisplayClass1_1.<.ctor>b__0(IFunctionInstanceEx i) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.cs : 20at Microsoft.Azure.WebJobs.Host.Executors.ActivatorInstanceFactory`1.Create(IFunctionInstanceEx functionInstance) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\ActivatorInstanceFactory.cs : 26at Microsoft.Azure.WebJobs.Host.Executors.FunctionInvoker`2.CreateInstance(IFunctionInstanceEx functionInstance) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionInvoker.cs : 44at Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.ParameterHelper.Initialize() at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs : 759at async Microsoft.Azure.WebJobs.Host.Executors.FunctionExecutor.TryExecuteAsync(IFunctionInstance functionInstance,CancellationToken cancellationToken) at C:\projects\azure-webjobs-sdk-rqm4t\src\Microsoft.Azure.WebJobs.Host\Executors\FunctionExecutor.cs : 90
```