[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, NULL, NULL)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string, NULL, integer, integer)
/home/bitrix/www/bitrix/modules/main/lib/db/connection.php:358
#3: Bitrix\Main\DB\Connection->queryScalar(string)
/home/bitrix/www/bitrix/modules/main/lib/composite/internals/locker.php:25
#4: Bitrix\Main\Composite\Internals\Locker::lock(string)
/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:475
#5: Bitrix\Main\Composite\Engine::processPageContent(string)
/home/bitrix/www/bitrix/modules/main/lib/composite/engine.php:422
#6: Bitrix\Main\Composite\Engine::endBuffering(string, string)
/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3194
#7: CAllMain->EndBufferContent(string)
/home/bitrix/www/bitrix/modules/main/classes/general/main.php:3138
#8: CAllMain->EndBufferContentMan()
/home/bitrix/www/bitrix/modules/main/include/epilog_after.php:36
#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:2519
#12: include_once(string)
/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#13: include_once(string)
/home/bitrix/www/bitrix/urlrewrite.php:2
Fatal error: Uncaught Bitrix\Main\DB\SqlQueryException: Mysql query error: (2006) MySQL server has gone away in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php:137
Stack trace:
#0 /home/bitrix/www/bitrix/modules/main/lib/db/mysqlcommonconnection.php(136): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT * FROM `...')
#1 /home/bitrix/www/bitrix/modules/main/lib/db/connection.php(716): Bitrix\Main\DB\MysqlCommonConnection->getTableFields('b_sec_session')
#2 /home/bitrix/www/bitrix/modules/main/lib/db/sqlhelper.php(387): Bitrix\Main\DB\Connection->getTableField('b_sec_session', 'SESSION_ID')
#3 /home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php(1190): Bitrix\Main\DB\SqlHelper->prepareAssignment('b_sec_session', 'SESSION_ID', 'rm88THmOYfNLXyC...')
#4 /home/bitrix/www/bitrix/modules/security/classes/general/session_db.php(92): Bitrix\Main\ORM\Data\DataManager::delete(Array)
#5 [internal function]: CSecuritySessionDB::write('rm88THmOYfNLXyC...', 'SESS_AUTH|a:1:{...')
#6 [internal function]: in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137