Drush7: Can not run cc all and commands that requires higher Drupal bootstrap

[and1truong]

When I run those commands, I always have:

$ pwd
/Users/andy/Sites/d813

$ ~/Library/Drush/drush --uri='http://d813.local:8083' --root=/Users/andy/Sites/d813/ cc all
PHP Fatal error:  Call to a member function get() on a non-object in /Users/andy/Sites/d813/core/lib/Drupal.php on line 414
PHP Stack trace:
PHP   1. {main}() /Users/andy/Library/Drush/drush.php:0
PHP   2. drush_main() /Users/andy/Library/Drush/drush.php:16
PHP   3. _drush_bootstrap_and_dispatch() /Users/andy/Library/Drush/drush.php:68
PHP   4. drush_dispatch() /Users/andy/Library/Drush/drush.php:105
PHP   5. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:178
PHP   6. drush_command() /Users/andy/Library/Drush/includes/command.inc:178
PHP   7. _drush_invoke_hooks() /Users/andy/Library/Drush/includes/command.inc:210
PHP   8. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:359
PHP   9. drush_cache_clear_pre_validate() /Users/andy/Library/Drush/includes/command.inc:359
PHP  10. drush_cache_clear_types() /Users/andy/Library/Drush/commands/core/cache.drush.inc:99
PHP  11. drush_command_invoke_all_ref() /Users/andy/Library/Drush/commands/core/cache.drush.inc:233
PHP  12. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:1268
PHP  13. views_drush_cache_clear() /Users/andy/Library/Drush/includes/command.inc:1268
PHP  14. Drupal::moduleHandler() /Users/andy/Library/Drush/commands/core/views.d8.drush.inc:458

Fatal error: Call to a member function get() on a non-object in /Users/andy/Sites/d813/core/lib/Drupal.php on line 414

Call Stack:
    0.0006     267272   1. {main}() /Users/andy/Library/Drush/drush.php:0
    0.0214    2615232   2. drush_main() /Users/andy/Library/Drush/drush.php:16
    0.1828    8011064   3. _drush_bootstrap_and_dispatch() /Users/andy/Library/Drush/drush.php:68
    0.3504    9862168   4. drush_dispatch() /Users/andy/Library/Drush/drush.php:105
    0.7434    9991024   5. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:178
    0.7434    9991360   6. drush_command() /Users/andy/Library/Drush/includes/command.inc:178
    0.7437    9995584   7. _drush_invoke_hooks() /Users/andy/Library/Drush/includes/command.inc:210
    0.7442   10009216   8. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:359
    0.7442   10009552   9. drush_cache_clear_pre_validate() /Users/andy/Library/Drush/includes/command.inc:359
    0.7443   10009752  10. drush_cache_clear_types() /Users/andy/Library/Drush/commands/core/cache.drush.inc:99
    0.7462   10072608  11. drush_command_invoke_all_ref() /Users/andy/Library/Drush/commands/core/cache.drush.inc:233
    0.7464   10073568  12. call_user_func_array() /Users/andy/Library/Drush/includes/command.inc:1268
    0.7464   10073904  13. views_drush_cache_clear() /Users/andy/Library/Drush/includes/command.inc:1268
    0.7464   10073952  14. Drupal::moduleHandler() /Users/andy/Library/Drush/commands/core/views.d8.drush.inc:458

Drush command terminated abnormally due to an unrecoverable error.                                                                                   [error]
Error: Call to a member function get() on a non-object in /Users/andy/Sites/d813/core/lib/Drupal.php, line 414

[mrsinguyen]

[13:49][mrsinguyen@Nguyen:~/Workspaces/Training/d8a13]$ drush rr

Fatal error: Call to undefined method Composer\Autoload\ClassLoader::setPsr4() in /Users/mrsinguyen/Workspaces/Training/d8a13/core/vendor/composer/autoload_real.php on line 37
Drush command terminated abnormally due to an unrecoverable error.                                                                                                   [error]
Error: Call to undefined method Composer\Autoload\ClassLoader::setPsr4() in /Users/mrsinguyen/Workspaces/Training/d8a13/core/vendor/composer/autoload_real.php, line
37

[Rade333]

Why is this issue closed? I get the same fatal error as mrsinguyen. What is the solution for that?

[Rade333]

The solution for me was to reinstall drush properly:
https://www.drupal.org/node/1791676

I had only pulled the latest code but not ran composer install. Now everything works.