[Bitrix\Main\DB\SqlQueryException]
Mysql query error: MySQL server has gone away (400)
SET NAMES 'utf8'
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:116
#0: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#1: Bitrix\Main\DB\Connection->query(string, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:378
#2: Bitrix\Main\DB\Connection->queryExecute(string)
/home/bitrix/www/bitrix/php_interface/after_connect_d7.php:3
#3: include(string)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:920
#4: Bitrix\Main\DB\Connection->afterConnected()
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:64
#5: Bitrix\Main\DB\MysqlConnection->connectInternal()
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:103
#6: Bitrix\Main\DB\MysqlConnection->queryInternal(string, array, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#7: Bitrix\Main\DB\Connection->query(string, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:378
#8: Bitrix\Main\DB\Connection->queryExecute(string)
/home/bitrix/www/bitrix/php_interface/after_connect_d7.php:3
#9: include(string)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:920
#10: Bitrix\Main\DB\Connection->afterConnected()
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:64
#11: Bitrix\Main\DB\MysqlConnection->connectInternal()
/home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:103
#12: Bitrix\Main\DB\MysqlConnection->queryInternal(string, NULL, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:329
#13: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:357
#14: Bitrix\Main\DB\Connection->queryScalar(string)
/home/bitrix/www/bitrix/modules/security/lib/session.php:111
#15: Bitrix\Security\SessionTable::lock(string, integer)
/home/bitrix/www/bitrix/modules/security/classes/general/session_db.php:52
#16: CSecuritySessionDB::read(string)
#17: session_start()
/home/bitrix/www/bitrix/modules/main/include.php:286
#18: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog_before.php:14
#19: require_once(string)
/home/bitrix/www/bitrix/modules/main/include/prolog.php:10
#20: require_once(string)
/home/bitrix/www/bitrix/header.php:1
#21: require(string)
/home/bitrix/www/catalog/index.php:2
#22: include_once(string)
/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#23: include_once(string)
/home/bitrix/www/bitrix/urlrewrite.php:2
Fatal error: Uncaught exception 'Bitrix\Main\DB\SqlQueryException' with message 'Mysql query error: MySQL server has gone away' in /home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php:116
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php(132): Bitrix\Main\DB\MysqlConnection->queryInternal('SELECT * FROM `...')
#1 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(715): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session')
#2 /home/bitrix/www/bitrix/modules/main/lib/db/sqlhelper.php(362): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID')
#3 /home/bitrix/www/bitrix/modules/main/lib/entity/datamanager.php(815): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'zdXSkVfLyyuRhGg...')
#4 /home/bitrix/www/bitrix/modules/security/classes/general/session_db.php(87): Bitrix\Main\Entity\DataManager::delete('zdXSkVfLyyuRhGg...')
#5 [internal function]: CSecuritySessionDB::write('zdXSkVfLyyuRhGg...', '')
#6 [internal f in /home/bitrix/www/bitrix/modules/main/lib/db/mysqlconnection.php on line 116