Show creator avatar in tasks

1

Hi! Tell me how to display the avatar of the task creator?

I get the task creator ID:
$task[‘creator_id’]), but I can’t get the name or login and avatar.

$task[‘creator_username’] = NULL
$task[‘creator_name’] = NULL
$task[‘author_username’] = NULL
$task[‘author_name’] = NULL

2

What’s the difference between creator and author?

Without any guarantee:

$user = $this->userModel->getById($user_id);
$username = $user['username'];
$name = $user['name'];
$avatarfile = $this->avatarFileModel->getFilename($user_id):