Unable to use formLabel helpers in Mezzio / Twig

Questions Mezzio
1

My App Config Provider has

$aggregator = new ConfigAggregator([
...
...
...

    \Laminas\Form\ConfigProvider::class,
...

But still I get the following error:

Unknown “formLabel” function.

When I try to use formLabel in twig:

{{ formLabel(eventForm.get('my-event-name')) }}
2

As far as I am aware you will need to make them available to Twig as extensions.