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Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT COUNT(*) AS "expression" FROM "node_access" "node_access" WHERE ("nid" = :db_condition_placeholder_0) AND ("grant_view" >= :db_condition_placeholder_1) AND ((("gid" IN (:db_condition_placeholder_2)) AND ("realm" = :db_condition_placeholder_3)) OR (("gid" IN (:db_condition_placeholder_4)) AND ("realm" = :db_condition_placeholder_5))); Array ( [:db_condition_placeholder_0] => 0 [:db_condition_placeholder_1] => 1 [:db_condition_placeholder_2] => 0 [:db_condition_placeholder_3] => all [:db_condition_placeholder_4] => 1 [:db_condition_placeholder_5] => view_unpublished_published_content ) in Drupal\node\NodeGrantDatabaseStorage->checkAll() (line 143 of core/modules/node/src/NodeGrantDatabaseStorage.php).