Error is generate by MainClass:
PDOException Object
(
    [message:protected] => SQLSTATE[08S01]: Communication link failure: 1053 Server shutdown in progress
    [string:Exception:private] => 
    [code:protected] => 08S01
    [file:protected] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
    [line:protected] => 238
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
                    [line] => 238
                    [function] => execute
                    [class] => PDOStatement
                    [type] => ->
                )

            [1] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/user/storages/partnercompanycategoryManager.php
                    [line] => 21
                    [function] => getall
                    [class] => genericManager
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_user/user.mod.php
                    [line] => 40
                    [function] => getall
                    [class] => partnercompanycategoryManager
                    [type] => ->
                )

            [3] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_user/user.mod.php
                    [line] => 10
                    [function] => isspecialurl_intern
                    [class] => userModule
                    [type] => ->
                )

            [4] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/appl/application.class.php
                    [line] => 467
                    [function] => isspecialurl
                    [class] => userModule
                    [type] => ->
                )

            [5] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/appl/application.class.php
                    [line] => 93
                    [function] => getrequestcontent
                    [class] => application
                    [type] => ->
                )

            [6] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/mainClass.class.php
                    [line] => 247
                    [function] => processModuleRequest
                    [class] => application
                    [type] => ->
                )

            [7] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/mainClass.class.php
                    [line] => 235
                    [function] => processRequest
                    [class] => mainClass
                    [type] => ->
                )

            [8] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/index.php
                    [line] => 36
                    [function] => processSiteRequest
                    [class] => mainClass
                    [type] => ->
                )

        )

    [previous:Exception:private] => 
    [errorInfo] => Array
        (
            [0] => 08S01
            [1] => 1053
            [2] => Server shutdown in progress
        )

)