德鲁帕尔7
每当我访问配置 > 搜索和元数据 > URL 别名 > 模式 (localhost/admin/config/search/path/patterns) 时，我都会收到此错误
原来的
PDOException: SQLSTATE[HY000]: 一般错误: 2006 MySQL 服务器已经消失: SELECT 1 AS 表达式 FROM {variable} 变量 WHERE ( (name = :db_condition_placeholder_0) ); Variable_set() 中的数组（ [:db_condition_placeholder_0] => drupal_css_cache_files ）（/home/www/icts-website/includes/bootstrap.inc 的第 991 行）。
额外的
PDOException：SQLSTATE [HY000]：一般错误：2006 MySQL服务器已经消失：INSERT INTO {watchdog}（uid，类型，消息，变量，严重性，链接，位置，引用者，主机名，时间戳）VALUES（：db_insert_placeholder_0，：db_insert_placeholder_1 、：db_insert_placeholder_2、：db_insert_placeholder_3、：db_insert_placeholder_4、：db_insert_placeholder_5、：db_insert_placeholder_6、：db_insert_placeholder_7、：db_insert_placeholder_8、：db_insert_placeholder_9）；数组 ( [:db_insert_placeholder_0] => 1 [:db_insert_placeholder_1] => php [:db_insert_placeholder_2] => %type: !message in %function (第 %line of %file)。[:db_insert_placeholder_3] => a:6:{ s:5:"%type";s:12:"PDOException";s:8:"!message";s:235:"SQLSTATE[HY000]: 一般错误: 2006 MySQL 服务器已经消失: SELECT 1 AS 表达式FROM {variable} 变量 WHERE ( (name …