不能在Linux上安裝的Drupal 8，PHP 5.6

我不能在我的Linux服務器乳寧php5.6安裝的Drupal 8 我的步驟不能在Linux上安裝的Drupal 8，PHP 5.6

1）下載並解壓Drupal的8.2.1.tar.gz

2）重命名Drupal的8.2.1 /到drupal2

3）CD drupal2

4）作曲更新

，當我去的網頁界面，並嘗試安裝它給出這樣許多類似Symfony錯誤

用戶不推薦使用的函數：Symfony \ Component \ DependencyInjection \ Definition :: getScope方法自版本2.8開始不再使用，將在3.0中刪除。在Symfony \ Component \ DependencyInjection \ Definition-> getScope（）中（第603行/home/tofa/www/drupal2/vendor/symfony/dependency-injection/Definition.php）。

然後它給

Warning: stat(): stat failed for /home/username/www/drupal2/sites/default/files/css in Drupal\Core\StreamWrapper\LocalStream->url_stat() (line 501 of core/lib/Drupal/Core/StreamWrapper/LocalStream.php). 
Drupal\Core\StreamWrapper\LocalStream->url_stat('public://css', 2) 
is_dir('public://css') (Line: 1032) 
file_scan_directory('public://css', '/.*/', Array) (Line: 184) 
Drupal\Core\Asset\CssCollectionOptimizer->deleteAll() (Line: 202) 
Drupal\Core\Extension\ThemeInstaller->install(Array, 1) (Line: 164) 
Drupal\Core\Extension\ThemeHandler->install(Array) (Line: 1541) 
install_profile_themes(Array) (Line: 660) 
install_run_task(Array, Array) (Line: 538) 
install_run_tasks(Array) (Line: 115) 
install_drupal(Object) (Line: 44)

不知道如何解決這一問題？

來源

2016-10-13 Khoga