Temporary fix for:
The URI '' is invalid. You
must use a valid URI scheme. in
Drupal\Core\Url::fromUri() (line 290 of
/Users/jamesbarnett/sites/IPC/ipcedtr/

This is how I get around that issue locally….
docroot/core/lib/Drupal/Core/Url.php
Line:290
return static::fromUri('http://localhost');

These directions worked with some modifications: https://javorszky.co.uk/2018/05/03/getting-xdebug-working-on-php-7-2-an…

I was using PHP on the command line with homebrew, so installed xdebug with pecl install xdebug
then I was able to put the following in the php.ini file, find the php.ini file for the command line by running php --ini and look for Loaded Configuration File in the output.

The below is for XDEUG 3.0

      $result = \Drupal::entityQuery('group')
        ->condition('type', $type)
        ->range(0, 20000)
        ->accessCheck(FALSE)
        ->execute();

make sure to set accessCheck to FALSE or you'll get no results, entityQuery respects permissions and the drush user won't be running as any particular user.

/**
 * Implements hook_mail().
 */
function app_voucher_mail($key, &$message, $params) {
  $function = 'app_voucher_mail__' . $key;
  if (function_exists($function)) {
    return $function($key, $message, $params);
  }

  /*
   * @I Convert the enrollment email to use the new mail handler
   *    type     : improvement
   *    priority : normal
   *    labels   : refactoring
   */
  if (!empty($params['from'])) {
    $message['from'] = $params['from'];
  }
  $message['subject'] = $params['subject'];
  $message['body'][] = $params['body'];
}

/**

$link = Url::fromUri('internal:/dashboard/1/my-vouchers');
$params['message'] = t('Your voucher is about to expire. Click here to view and manage your list of vouchers %link', ['%link' => $link->toString()]);

Copy the config file(s) to a temp directory called only-few-configs (or whatver you like) and run drush cim --partial --source=/full/pathTo/only-few-configs/

This should have worked supposedly: drupal config:import:single --directory="/Users/jamesbarnett/sites/IPC/ipcedtr/config/default" --file="views.view.confirm_message_product_display.yml". (might need drupal console?)

 $results = \Drupal::entityQuery('app_voucher')
      ->range(0, 20000)
      ->execute();
foreach ($results as $result) {
      $messenger = \Drupal::messenger();
      $voucher_entity = \Drupal::entityTypeManager()->getStorage("app_voucher")->load($result);
      $voucher_id = $voucher_entity->voucher_id->getValue();
      $product_id = $voucher_entity->product_id->getValue();

}

Here are 2 different ways to get the same sort of data:

use (if module works in both Drupal 8 and 9)
core_version_requirement: ^8 || ^9

in place of core: 8.x
in the module_name.info.ym file

  $url = Url::fromUri('internal:/user/' . $member_uid);
  $link_to_user = Link::fromTextAndUrl('view', $url);

https://drupalize.me/tutorial/generate-urls-and-output-links?p=2766

code to grab a field value from a group module member field

  $group =  \Drupal\group\Entity\Group::load(31);
  $group_memberships = \Drupal::service('group.membership_loader')->loadByGroup($group);
  // $results = $query->execute();
  foreach ($group_memberships as $member) {
    //$group_id[] = $member->groupContent->values["field_group_id"]["x-default"][0]["value"];
    $group_id[] = $member->getGroupContent()->get("field_group_id")->value;
  }
  $options = array_filter($group_id);

This worked to grab the uid from the member