General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll().

Problem/Motivation

Drupal\Core\Database\DatabaseExceptionWrapper: SQLSTATE[HY000]: General error: 2014 Cannot execute queries while other unbuffered queries are active. Consider using PDOStatement::fetchAll(). Alternatively, if your code is only ever going to run against mysql, you may enable query buffering by setting the PDO::MYSQL_ATTR_USE_BUFFERED_QUERY attribute.: SELECT 1 AS "expression" FROM "sessions" "sessions" WHERE "sid" = :db_condition_placeholder_0; Array ( [:db_condition_placeholder_0] => nhZhjHUhv1iirMfNhT8ZE02C7DtmGCdRSEXWw407igM ) in Drupal\Core\Session\SessionHandler->Drupal\Core\Session\{closure}() (line 95 of /home/demo/web/example.com/app/web/core/lib/Drupal/Core/Session/SessionHandler.php)

Steps to reproduce

Go to the mail safety dashboard with multiple records spanning across multiple pages.