Warning: mysqli::real_connect(): MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 61

Warning: mysqli::real_connect(): Error while reading greeting packet. PID=17553 in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 61

Warning: mysqli::real_connect(): (HY000/2006): MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 61
[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2006) MySQL server has gone away (400)
/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:3193
#3: Bitrix\Main\ORM\Query\Query->query(string)
	/home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php:806
#4: Bitrix\Main\ORM\Query\Query->exec()
	/home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php:457
#5: Bitrix\Main\ORM\Data\DataManager::getList()
	/home/bitrix/www/bitrix/modules/main/lib/service/geoip/manager.php:376
#6: Bitrix\Main\Service\GeoIp\Manager::initHandlers()
	/home/bitrix/www/bitrix/modules/main/lib/service/geoip/manager.php:224
#7: Bitrix\Main\Service\GeoIp\Manager::getDataResult(string, string, array)
	/home/bitrix/www/bitrix/modules/main/lib/service/geoip/manager.php:75
#8: Bitrix\Main\Service\GeoIp\Manager::getCityName(string)
	/home/bitrix/www/local/php_interface/include/Class/City.php:20
#9: City::geoIP()
	/home/bitrix/www/local/php_interface/include/Class/City.php:35
#10: City::get()
	/home/bitrix/www/local/php_interface/init.php:151
#11: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include.php:234
#12: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#13: require_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#14: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#15: require(string)
	/home/bitrix/www/about/book/index.php:2