Error is generate by MainClass:
PDOException Object
(
    [message:protected] => SQLSTATE[70100]: <>: 1927 Connection was killed
    [string:Exception:private] => 
    [code:protected] => 70100
    [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/global/currency/currency.global.php
                    [line] => 107
                    [function] => get
                    [class] => genericManager
                    [type] => ->
                )

            [2] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/product/classes/offer.class.php
                    [line] => 149
                    [function] => convert
                    [class] => currencyModuleGlobal
                    [type] => ->
                )

            [3] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/product/classes/offer.class.php
                    [line] => 255
                    [function] => processobj
                    [class] => offer
                    [type] => ->
                )

            [4] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/ELASTICSEARCH.class.php
                    [line] => 647
                    [function] => __processELSRC
                    [class] => offer
                    [type] => ->
                )

            [5] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/global/product/classes/product.class.php
                    [line] => 442
                    [function] => _converttoclass
                    [class] => ELASTICSEARCH
                    [type] => ::
                )

            [6] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/ELASTICSEARCH.class.php
                    [line] => 647
                    [function] => __processELSRC
                    [class] => product
                    [type] => ->
                )

            [7] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/global/main/classes/Abstract/ELASTICSEARCH.class.php
                    [line] => 409
                    [function] => _converttoclass
                    [class] => ELASTICSEARCH
                    [type] => ::
                )

            [8] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_product/product.mod.php
                    [line] => 43
                    [function] => _SEARCH
                    [class] => ELASTICSEARCH
                    [type] => ::
                )

            [9] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/modules/_product/product.mod.php
                    [line] => 18
                    [function] => isspecialurl_intern
                    [class] => productModule
                    [type] => ->
                )

            [10] => Array
                (
                    [file] => /data/www/vhost/OKFLORA/livrareflori.md/www/appl/application.class.php
                    [line] => 425
                    [function] => isspecialurl
                    [class] => productModule
                    [type] => ->
                )

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

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

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

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

        )

    [previous:Exception:private] => 
    [errorInfo] => Array
        (
            [0] => 70100
            [1] => 1927
            [2] => Connection was killed
        )

)