Form Builder

I am getting

InvalidArgumentException: The form argument Drupal\competition\Form\CompetitionForm::class is not a valid form. in Drupal\Core\Form\FormBuilder->getFormId() (line 190 of /home/test/public_html/core/lib/Drupal/Core/Form/FormBuilder.php).

This is my call in the block code

public function build() {    
		$builtForm = \Drupal::formBuilder()->getForm('Drupal\competition\Form\CompetitionForm::class');
		$renderArray['form'] = $builtForm;
		return $renderArray;
  	} 

This the first part of my form code

* @file
*/
namespace Drupal\competition\Form;

use Drupal\Core\Form\ConfigFormBase;

class CompetitionForm extends FormBase { 
	/**
   	* {@inheritdoc}
   	*/
 	public function getFormId() {
   		return 'competition_form';
  	}
    
  	/**
   	* {@inheritdoc}
   	*/
     public function buildForm(array $form, FormStateInterface $form_state) {
        $form['first_name'] = array(
            '#name' => 'first_name',		
            '#id' => 'first_name',
            '#type' => 'textfield',
            '#title' => t('FIRST NAME:'),
            '#required' => TRUE,
            '#prefix' => '<div class="label-wrap">',
            '#suffix' => '</div>',
        );

I can not see anything wrong with it but obviously there must be

Thanks