PDOException: SQLSTATE[HY000]错误

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT s.lid, t.translation, s.version FROM {locales_source} s LEFT JOIN {locales_target} t ON s.lid = t.lid AND t.language = :language WHERE s.source = :source AND s.context = :context AND s.textgroup = 'default'; Array ( [:language] => ru [:source] => Attachments added to other displays to achieve multiple views in the same view. [:context] => ) in locale() (line 683 of .........