Unsure why Reactor step should succeed in tutorial

Hello all,

I have been dipping my toes in Reactor recently, but I am sort of stuck on the Error Handling with Compensation.

In Step 6,

# Test with a valid @example.com email (should succeed)
{:ok, user} = Reactor.run(ResilientUserRegistration, %{
  email: "alice@example.com",
  password: "secretpassword123"
})

In step 5, the tutorial defines a :send_admin_notification step that utilizes EmailService to simulate sending an email to “admin@company.com”. However, EmailService is set up to fail for any email address that doesn’t end with “@example.com”. Wouldn’t the Reactor eventually fail regardless of the entered email address? For reference, this is what I get when I run the step:

{:error,
 %Reactor.Error.Invalid{
   errors: [
     %Reactor.Error.Invalid.RunStepError{
       error: %{message: "Email service unavailable", type: :network_timeout},
       step: %Reactor.Step{
         arguments: [
           %Reactor.Argument{
             description: nil,
             name: :user,
             source: %Reactor.Template.Result{name: :create_user, sub_path: []},
             transform: nil
           },
           %Reactor.Argument{
             description: nil,
             name: :email,
             source: %Reactor.Template.Value{
               value: "admin@company.com",
               sub_path: []
             },
             transform: nil
           }
         ],
         async?: true,
         context: %{},
         description: nil,
         impl: {EmailService, []},
         name: :send_admin_notification,
         max_retries: 1,
         ref: :send_admin_notification,
         transform: nil,
         guards: []
       },
       splode: Reactor.Error,
       bread_crumbs: [],
       vars: [],
       path: [],
       stacktrace: #Splode.Stacktrace<>,
       class: :invalid
     }
   ],
   splode: Reactor.Error,
   bread_crumbs: [],
   vars: [],
   path: [],
   stacktrace: #Splode.Stacktrace<>,
   class: :unknown
 }}

Thank you!