[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2006) MySQL server has gone away (400)
/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/lib/db/mysqliconnection.php:82
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/lib/data/connection.php:53
#1: Bitrix\Main\Data\Connection->getResource()
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/classes/general/database.php:282
#2: CAllDatabase->DoConnect()
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/classes/mysql/database.php:95
#3: CDatabaseMysql->Query(string, boolean, string)
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/classes/mysql/main.php:115
#4: CMain->GetLang()
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/include.php:46
#5: require_once(string)
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/home/bitrix/ext_www/bfla.eu/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/home/bitrix/ext_www/bfla.eu/bitrix/header.php:1
#8: require(string)
	/home/bitrix/ext_www/bfla.eu/index.php:2