[Bitrix\Main\Messenger\Internals\Exception\Broker\BrokerReadException] 
Unable to read messages: Mysql query error: (2006) MySQL server has gone away (400)
/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Broker/DbBroker.php:90
#0: Bitrix\Main\Messenger\Internals\Broker\DbBroker->get
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Receiver/AbstractReceiver.php:67
#1: Bitrix\Main\Messenger\Receiver\AbstractReceiver->getMessages
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Receiver/AbstractReceiver.php:128
#2: Bitrix\Main\Messenger\Receiver\AbstractReceiver->run
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Worker.php:59
#3: Bitrix\Main\Messenger\Internals\Worker->process
	
#4: call_user_func_array
	/home/bitrix/www/bitrix/modules/main/lib/application.php:845
#5: Bitrix\Main\Application->runBackgroundJobs
	/home/bitrix/www/bitrix/modules/main/lib/application.php:380
#6: Bitrix\Main\Application->terminate
	/home/bitrix/www/bitrix/modules/main/lib/application.php:332
#7: Bitrix\Main\Application->end
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3706
#8: CMain::FinalActions
	/home/bitrix/www/bitrix/modules/main/include/epilog_after.php:61
#9: require(string)
	/home/bitrix/www/bitrix/modules/main/include/epilog.php:3
#10: require_once(string)
	/home/bitrix/www/bitrix/footer.php:4
#11: require(string)
	/home/bitrix/www/catalog/index.php:894
#12: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:128
#13: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
----------
Previous exception: [Bitrix\Main\DB\SqlQueryException] 
Mysql query error: (2006) MySQL server has gone away (400)
SELECT GET_LOCK('a1bb8d13048f91cf581ae76030824f4559aba3bec0eea4fb0b2c7bbca56aadbc', 0) as L
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php:417
#0: Bitrix\Main\DB\MysqlCommonConnection->createQueryException
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:149
#1: Bitrix\Main\DB\MysqliConnection->queryInternal
	/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:324
#2: Bitrix\Main\DB\Connection->query
	/home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php:305
#3: Bitrix\Main\DB\MysqlCommonConnection->lock
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Storage/Db/DbStorage.php:134
#4: Bitrix\Main\Messenger\Internals\Storage\Db\DbStorage->lock
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Storage/Db/DbStorage.php:97
#5: Bitrix\Main\Messenger\Internals\Storage\Db\DbStorage->getReadyMessagesOfQueue
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Broker/DbBroker.php:78
#6: Bitrix\Main\Messenger\Internals\Broker\DbBroker->get
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Receiver/AbstractReceiver.php:67
#7: Bitrix\Main\Messenger\Receiver\AbstractReceiver->getMessages
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Receiver/AbstractReceiver.php:128
#8: Bitrix\Main\Messenger\Receiver\AbstractReceiver->run
	/home/bitrix/www/bitrix/modules/main/lib/Messenger/Internals/Worker.php:59
#9: Bitrix\Main\Messenger\Internals\Worker->process
	
#10: call_user_func_array
	/home/bitrix/www/bitrix/modules/main/lib/application.php:845
#11: Bitrix\Main\Application->runBackgroundJobs
	/home/bitrix/www/bitrix/modules/main/lib/application.php:380
#12: Bitrix\Main\Application->terminate
	/home/bitrix/www/bitrix/modules/main/lib/application.php:332
#13: Bitrix\Main\Application->end
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3706
#14: CMain::FinalActions
	/home/bitrix/www/bitrix/modules/main/include/epilog_after.php:61
#15: require(string)
	/home/bitrix/www/bitrix/modules/main/include/epilog.php:3
#16: require_once(string)
	/home/bitrix/www/bitrix/footer.php:4
#17: require(string)
	/home/bitrix/www/catalog/index.php:894
#18: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:128
#19: include_once(string)
	/home/bitrix/www/bitrix/urlrewrite.php:2
----------