Handle exceptions when occures NuGet garelly return 503:Server Unavailable

[altrive]

NuGet garelly may return 503:Server Unavailable in some cases.
but following default exception message is difficult to understand.

Exception calling "InstallPackage" with "4" argument(s): "One or more errors occurred."
At C:\Users\altrive\Documents\WindowsPowerShell\Modules\PSNuGet\Scripts\Use-NuGetPackage.ps1:47 char:9
+         $manager.InstallPackage($PackageId, $Version, $true, $Include ...
+         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : NotSpecified: (:) [], MethodInvocationException
    + FullyQualifiedErrorId : AggregateException

It need to handle exception properly.

Error Details

$error[0].exception | select *

ErrorRecord                 : Exception calling "InstallPackage" with "4" argument(s): "One or more errors occurred."
StackTrace                  :    at System.Management.Automation.ExceptionHandlingOps.ConvertToMethodInvocationException(Exception 
                              exception, Type typeToThrow, String methodName, Int32 numArgs, MemberInfo memberInfo)
                                 at CallSite.Target(Closure , CallSite , PackageManager , String , String , Boolean , SwitchParameter )
                                 at System.Dynamic.UpdateDelegates.UpdateAndExecute5[T0,T1,T2,T3,T4,TRet](CallSite site, T0 arg0, T1 arg1, 
                              T2 arg2, T3 arg3, T4 arg4)
                                 at System.Management.Automation.Interpreter.DynamicInstruction`6.Run(InterpretedFrame frame)
                                 at System.Management.Automation.Interpreter.EnterTryCatchFinallyInstruction.Run(InterpretedFrame frame)
WasThrownFromThrowStatement : False
Message                     : Exception calling "InstallPackage" with "4" argument(s): "One or more errors occurred."
Data                        : {System.Management.Automation.Interpreter.InterpretedFrameInfo}
InnerException              : System.AggregateException: One or more errors occurred. ---> System.InvalidOperationException: An error 
                              occurred while loading packages from 'https://go.microsoft.com/fwlink/?LinkID=397631&clcid=0x409': The remote 
                              server returned an error: (503) Server Unavailable. ---> System.Net.WebException: The remote server returned 
                              an error: (503) Server Unavailable.
                                 at System.Net.HttpWebRequest.GetResponse()
                                 at NuGet.RequestHelper.GetResponse(Func`1 createRequest, Action`1 prepareRequest, IProxyCache proxyCache, 
                              ICredentialCache credentialCache, ICredentialProvider credentialProvider)
                                 at NuGet.HttpClient.GetResponse()
                                 at NuGet.RedirectedHttpClient.GetResponseUri(HttpClient client)
                                 at NuGet.RedirectedHttpClient.EnsureClient()
                                 at System.Lazy`1.CreateValue()
                                 at System.Lazy`1.LazyInitValue()
                                 at NuGet.RedirectedHttpClient.get_CachedClient()
                                 at NuGet.RedirectedHttpClient.get_Uri()
                                 at NuGet.DataServicePackageRepository.get_Context()
                                 at NuGet.DataServicePackageRepository.FindPackagesById(String packageId)
                                 --- End of inner exception stack trace ---
                                 at NuGet.DataServicePackageRepository.FindPackagesById(String packageId)
                                 at NuGet.PackageRepositoryExtensions.FindPackagesById(IPackageRepository repository, String packageId)
                                 at System.Threading.Tasks.Task`1.InnerInvoke()
                                 at System.Threading.Tasks.Task.Execute()
                                 --- End of inner exception stack trace ---
                                 at System.Threading.Tasks.Task.WaitAll(Task[] tasks, Int32 millisecondsTimeout, CancellationToken 
                              cancellationToken)
                                 at NuGet.AggregateRepository.FindPackagesById(String packageId)
                                 at NuGet.PackageRepositoryExtensions.FindPackage(IPackageRepository repository, String packageId, 
                              SemanticVersion version, IPackageConstraintProvider constraintProvider, Boolean allowPrereleaseVersions, 
                              Boolean allowUnlisted)
                                 at NuGet.PackageRepositoryHelper.ResolvePackage(IPackageRepository sourceRepository, IPackageRepository 
                              localRepository, IPackageConstraintProvider constraintProvider, String packageId, SemanticVersion version, 
                              Boolean allowPrereleaseVersions)
                                 at NuGet.PackageManager.InstallPackage(String packageId, SemanticVersion version, Boolean 
                              ignoreDependencies, Boolean allowPrereleaseVersions)
                                 at CallSite.Target(Closure , CallSite , PackageManager , String , String , Boolean , SwitchParameter )
                              ---> (Inner Exception #0) System.InvalidOperationException: An error occurred while loading packages from 
                              'https://go.microsoft.com/fwlink/?LinkID=397631&clcid=0x409': The remote server returned an error: (503) 
                              Server Unavailable. ---> System.Net.WebException: The remote server returned an error: (503) Server 
                              Unavailable.
                                 at System.Net.HttpWebRequest.GetResponse()
                                 at NuGet.RequestHelper.GetResponse(Func`1 createRequest, Action`1 prepareRequest, IProxyCache proxyCache, 
                              ICredentialCache credentialCache, ICredentialProvider credentialProvider)
                                 at NuGet.HttpClient.GetResponse()
                                 at NuGet.RedirectedHttpClient.GetResponseUri(HttpClient client)
                                 at NuGet.RedirectedHttpClient.EnsureClient()
                                 at System.Lazy`1.CreateValue()
                                 at System.Lazy`1.LazyInitValue()
                                 at NuGet.RedirectedHttpClient.get_CachedClient()
                                 at NuGet.RedirectedHttpClient.get_Uri()
                                 at NuGet.DataServicePackageRepository.get_Context()
                                 at NuGet.DataServicePackageRepository.FindPackagesById(String packageId)
                                 --- End of inner exception stack trace ---
                                 at NuGet.DataServicePackageRepository.FindPackagesById(String packageId)
                                 at NuGet.PackageRepositoryExtensions.FindPackagesById(IPackageRepository repository, String packageId)
                                 at System.Threading.Tasks.Task`1.InnerInvoke()
                                 at System.Threading.Tasks.Task.Execute()<---

TargetSite                  : Void CheckActionPreference(System.Management.Automation.Language.FunctionContext, System.Exception)
HelpLink                    : 
Source                      : System.Management.Automation
HResult                     : -2146233087