Error: Error: MySQL server has gone away<br/>Error No: 2006<br/>SELECT `a`.`attribute_id`, `ad`.`name`, GROUP_CONCAT(`pa`.`text` SEPARATOR '
') AS text FROM `oc_product_attribute` `pa` LEFT JOIN `oc_attribute` `a` ON (`pa`.`attribute_id` = `a`.`attribute_id`) LEFT JOIN `oc_attribute_description` `ad` ON (`a`.`attribute_id` = `ad`.`attribute_id`) WHERE `pa`.`product_id` = '180155' AND `a`.`attribute_group_id` = '7' AND `ad`.`language_id` = '2' AND `pa`.`language_id` = '2' GROUP BY `pa`.`attribute_id` ORDER BY `a`.`sort_order`, `ad`.`name`
File: /var/www/html/system/library/db/mysqli.php
Line: 122

Backtrace: 0
File: /var/www/html/system/library/db.php
Line: 63
Class: Opencart\System\Library\DB\MySQLi
Function: query

Backtrace: 1
File: /var/www/html/catalog/model/catalog/product.php
Line: 488
Class: Opencart\System\Library\DB
Function: query

Backtrace: 2
File: /var/www/html/system/engine/loader.php
Line: 343
Class: Opencart\Catalog\Model\Catalog\Product
Function: getAttributes

Backtrace: 3
File: /var/www/html/system/engine/proxy.php
Line: 87
Class: Opencart\System\Engine\Loader
Function: Opencart\System\Engine\{closure}

Backtrace: 4
File: /var/www/html/catalog/controller/product/product.php
Line: 441
Class: Opencart\System\Engine\Proxy
Function: __call

Backtrace: 5
File: /var/www/html/system/engine/action.php
Line: 96
Class: Opencart\Catalog\Controller\Product\Product
Function: index

Backtrace: 6
File: /var/www/html/system/framework.php
Line: 259
Class: Opencart\System\Engine\Action
Function: execute

Backtrace: 7
File: /var/www/html/index.php
Line: 20
Function: require_once

<br />
<b>Fatal error</b>:  Uncaught Exception: Error: MySQL server has gone away&lt;br/&gt;Error No: 2006&lt;br/&gt;REPLACE INTO `oc_session` SET `session_id` = '3d0f6558fc918016363aa16d2c', `data` = '{\&quot;currency\&quot;:\&quot;AZN\&quot;,\&quot;jrv\&quot;:[180155,16173,119183,66873,159122,74561,116927,74761,84773,170556,115459,112726,41584,92707,118979,154696,112511,116446,135441,24865],\&quot;review_token\&quot;:\&quot;3d53acf0c43e813cdf5ec1431b1c3af8\&quot;,\&quot;api_id\&quot;:\&quot;journal3_popup_97a065bb87\&quot;,\&quot;upload_token\&quot;:\&quot;b5d82a08b02e838a361aa62cc3b0cd4f\&quot;}', `expire` = '2025-12-20 00:46:20' in /var/www/html/system/library/db/mysqli.php:122
Stack trace:
#0 /var/www/html/system/library/db.php(63): Opencart\System\Library\DB\MySQLi-&gt;query('REPLACE INTO `o...')
#1 /var/www/html/system/library/session/db.php(63): Opencart\System\Library\DB-&gt;query('REPLACE INTO `o...')
#2 /var/www/html/system/library/session.php(89): Opencart\System\Library\Session\DB-&gt;write('3d0f6558fc91801...', Array)
#3 [internal function]: Opencart\System\Library\Session-&gt;close()
#4 {main}
  thrown in <b>/var/www/html/system/library/db/mysqli.php</b> on line <b>122</b><br />