OU Common database exception:

PDOException Object
(
    [message:protected] => SQLSTATE[HY000] [2002] No such file or directory
    [string:Exception:private] => 
    [code:protected] => 2002
    [file:protected] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/Database.class.php
    [line:protected] => 52
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/Database.class.php
                    [line] => 52
                    [function] => __construct
                    [class] => PDO
                    [type] => ->
                )

            [1] => Array
                (
                    [file] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/OUCommon.class.php
                    [line] => 32
                    [function] => connect
                    [class] => OUFabric\OUCommon\Database
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/OUCommon.php
                    [line] => 30
                    [function] => init
                    [class] => OUFabric\OUCommon\OUCommon
                    [type] => ::
                )

            [3] => Array
                (
                    [file] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oudowntime/v1/OUDowntime.php
                    [line] => 6
                    [args] => Array
                        (
                            [0] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/OUCommon.php
                        )

                    [function] => require_once
                )

            [4] => Array
                (
                    [file] => /srv/www2.open.ac.uk/www/html/students/index.php
                    [line] => 30
                    [args] => Array
                        (
                            [0] => /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oudowntime/v1/OUDowntime.php
                        )

                    [function] => require_once
                )

        )

    [previous:Exception:private] => 
    [errorInfo] => Array
        (
            [0] => HY000
            [1] => 2002
            [2] => No such file or directory
        )

    [xdebug_message] => ( ! ) PDOException: SQLSTATE[HY000] [2002] No such file or directory in /srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/Database.class.php on line 52
Call Stack
#TimeMemoryFunctionLocation
10.0000359864{main}(  ).../index.php:0
20.0001360736require_once( '/srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oudowntime/v1/OUDowntime.php ).../index.php:30
30.0001361184require_once( '/srv/www2.open.ac.uk/www/html/ldt_shared/oufabric/oucommon/v1/OUCommon.php ).../OUDowntime.php:6
40.0012378000OUFabric\OUCommon\OUCommon::init(  ).../OUCommon.php:30
50.0013382832OUFabric\OUCommon\Database->connect(  ).../OUCommon.class.php:32
60.0013383664__construct( $dsn = 'mysql:host=localhost;dbname=ldt_shared', $username = 'ldtUser', $password = 'lDt10Dec', $options = [3 => 2] ).../Database.class.php:52

)