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I have a multistep webform with required fields. The problem is that when I press the "previous"button in order to go to the page before the validation triggers and does not allow me to change the page. How can I disable the validation if the "previous" button is pressed?

I followed this question but it didnt work by adding this code:

if(isset($form['actions']['wizard_prev'])){
  $form['actions']['wizard_prev']['#validate'] = ['::noValidate'];
}

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