bug-somewhere.php

<?php
  
  /**
   * This class is ok.
   */
  class User {

    /**
     * @var string
     */
    private $name;

    public function __construct(string $name) {
      $this->name = $name;
    }

    public function getName() : string {
      return $this->name;
    }
  }

  class Auth {

    /**
     * @var User|null
     */
    private $user;


    /**
     * This method is ok.
     */
    public function __construct() {
      if (random_int(0, 1) === 1) {
        $this->user = new User('User Name');
      }
    }

    public function isAuthorized() : bool {
      return $this->getUser() !== null;
    }

    public function getUser() : ?User {
      return $this->user;
    }
  }

  class ShowUserInfo {
    /**
     * This method is ok.
     * @param User $user
     */
    public function show(User $user) {
      echo $user->getName();
    }
  }

  $auth = new Auth();
  if ($auth->isAuthorized()) {
    echo "Hello ".$auth->getUser()->getName()."\n"
  } else {
    echo "Hi\n"
  }