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] => 115
    [trace:Exception:private] => Array
        (
            [0] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
                    [line] => 115
                    [function] => execute
                    [class] => PDOStatement
                    [type] => ->
                )

            [1] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/genericattrManager.abstract.php
                    [line] => 17
                    [function] => get
                    [class] => genericManager
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
                    [line] => 659
                    [function] => get
                    [class] => genericattrManager
                    [type] => ->
                )

            [3] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
                    [line] => 555
                    [function] => get_text
                    [class] => genericManager
                    [type] => ->
                )

            [4] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericManager.abstract.php
                    [line] => 240
                    [function] => setobj
                    [class] => genericManager
                    [type] => ->
                )

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

            [6] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/category/category.global.php
                    [line] => 458
                    [function] => getall
                    [class] => categoryManager
                    [type] => ->
                )

            [7] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/category/category.global.php
                    [line] => 461
                    [function] => getcategorymenu
                    [class] => categoryModuleGlobal
                    [type] => ->
                )

            [8] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_category/category.mod.php
                    [line] => 2104
                    [function] => getcategorymenu
                    [class] => categoryModuleGlobal
                    [type] => ->
                )

            [9] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_default/default.mod.php
                    [line] => 686
                    [function] => mainmenu
                    [class] => categoryModule
                    [type] => ->
                )

            [10] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_default/default.mod.php
                    [line] => 836
                    [function] => mainbarmenu_links
                    [class] => defaultModule
                    [type] => ->
                )

            [11] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_default/default.mod.php
                    [line] => 573
                    [function] => mainbarmenu
                    [class] => defaultModule
                    [type] => ->
                )

            [12] => Array
                (
                    [function] => topcontent
                    [class] => defaultModule
                    [type] => ->
                )

            [13] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/genericApplication.class.php
                    [line] => 104
                    [function] => invoke
                    [class] => ReflectionMethod
                    [type] => ->
                )

            [14] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/appl/application.class.php
                    [line] => 784
                    [function] => callFuncFromModule
                    [class] => genericApplication
                    [type] => ->
                )

            [15] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/appl/application.class.php
                    [line] => 210
                    [function] => showMainPage
                    [class] => application
                    [type] => ->
                )

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

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

            [18] => 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
        )

)