“Undefined Variable”

My page with the PDB registration form is showing errors on loading*:
“Notice: Undefined variable: found in /var/www/wp-content/plugins/participants-database/classes/PDb_Field_Group_Item.php on line 227

Notice: Undefined variable: found in /var/www/wp-content/plugins/participants-database/classes/PDb_Field_Group_Item.php on line 229”

It appears the code it’s referencing is here (starting on line 225).

private function group_fields_have_values()
  {
    $has_field_values = wp_cache_get( $this->name, 'pdb-group_fields_have_value', false, $found );
    
    if ( ! $found ) {
      foreach( $this->fields as $field ) {
        /* @var $field PDb_Form_Field_Def */
        if ( $field->has_value() ) {
          $has_field_values = true;
          break;
        }
      }
      reset( $this->fields );
      wp_cache_set( $this->name, $has_field_values, 'pdb-group_fields_have_value', Participants_Db::cache_expire() );
    }
    
    return $has_field_values;

So it’s likely that it’s the $found variable, but I’m not sure where to go from here. Any suggestions? Thanks!

*Well it was until I turned WP_DEBUG_DISPLAY to ‘false’. But the underlying issue still remains.

• This topic was modified 3 years, 12 months ago by cculler02. Reason: Turned WP_DEBUG_DISPLAY to false

The page I need help with: [log in to see the link]