Same on all six of my Concrete5 websites, 4 of which have no add ons.

8.5.1 works fine with PHP 7.2.X, but when I enable PHP 7.3.X this is the error I get:


*
* @throws PDOException in case of an error.
*/
public function __construct($dsn, $user = null, $password = null, array $options = null)
{
try {
parent::__construct($dsn, $user, $password, $options);
$this->setAttribute(PDO::ATTR_STATEMENT_CLASS, array('Doctrine\DBAL\Driver\PDOStatement', array()));
$this->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
} catch (\PDOException $exception) {
throw new PDOException($exception);
}
}

/**
* {@inheritdoc}
*/
public function exec($statement)
{
try {
return parent::exec($statement);
} catch (\PDOException $exception) {
throw new PDOException($exception);
}
}