[Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT ID FROM b_module ORDER BY ID
/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/lib/db/mysqliconnection.php:137
#0: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/lib/db/connection.php:330
#1: Bitrix\Main\DB\Connection->query
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/lib/modulemanager.php:20
#2: Bitrix\Main\ModuleManager::getInstalledModules
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/lib/loader.php:99
#3: Bitrix\Main\Loader::includeModule
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/classes/general/module.php:251
#4: CModule::IncludeModule
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/classes/general/module.php:434
#5: ExecuteModuleEventEx
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/include.php:170
#6: require_once(string)
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/include/prolog_before.php:14
#7: require_once(string)
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/include/prolog.php:10
#8: require_once(string)
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/header.php:1
#9: require(string)
	/home/ati/web/rti-ati.com.ua/public_html/ru/produktsiya/index.php:2
#10: include_once(string)
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/modules/main/include/urlrewrite.php:159
#11: include_once(string)
	/home/ati/web/rti-ati.com.ua/public_html/bitrix/urlrewrite.php:2