Error Reported on `function bootstrap_form_element(` @ form.inc:44

After just installing the bootstrap theme I started getting the following errors.

* Notice: Undefined index: #type in bootstrap_form_element() (line 44 of {DRUPAL_ROOT}/sites/all/themes/bootstrap/includes/form.inc).

// Add bootstrap class
  if ($element['#type'] == "radio" || $element['#type'] == "checkbox") {
    $exclude_control = TRUE;
  }
  else {
    $attributes['class'] = array('control-group');
  }