Lista de botones con AutowireIterator

Hi:
In this chapter, after modifying all files according to the instructions, the system does not work and throws the following error when you press a button:

Attempted to call an undefined method named "get" of class "symfony \ component \ > dependNCyinjection \ argument \ rewindablegenerator".
Did You Mean to Call "Getiterator"?

What is missing?

I was a little bit confused by this lesson.

The code in the video differs a bit from the codeblocks on the page.
Using [] vs. yield.

// Code as shown in the codeblocks on the page
public function buttons(): iterable
{
   foreach ($this->buttons as $name => $button) {
       yield $name;
   }
}

And:

// Code as shown in the video
public function buttons(): iterable
{
    $buttons = [];

    foreach ($this->buttons as $name => $button) {
        $buttons[] = $name;
    }

    return $buttons;
}

This also made dumping $remote->buttons() differ.

RemoteController.php on line 32:
Generator {#247 ▼
  this: 
App\Remote
\
ButtonRemote {#232 …}
  trace: {▶}
  closed: false
}

Versus:

RemoteController.php on line 32:
array:5 [▼
  0 => "power"
  1 => "channel-down"
  2 => "channel-up"
  3 => "volume-down"
  4 => "volume-up"
]

In the end, the template renders exactly the same though.