[intec\core\db\Exception] 
SQLSTATE[HY000]: General error: 2006 MySQL server has gone away
The SQL being executed was: SELECT
    kcu.constraint_name,
    kcu.column_name,
    kcu.referenced_table_name,
    kcu.referenced_column_name
FROM information_schema.referential_constraints AS rc
JOIN information_schema.key_column_usage AS kcu ON
    (
        kcu.constraint_catalog = rc.constraint_catalog OR
        (kcu.constraint_catalog IS NULL AND rc.constraint_catalog IS NULL)
    ) AND
    kcu.constraint_schema = rc.constraint_schema AND
    kcu.constraint_name = rc.constraint_name
WHERE rc.constraint_schema = database() AND kcu.table_schema = database()
AND rc.table_name = 'constructor_fonts' AND kcu.table_name = 'constructor_fonts' (0)
/home/bitrix/www/bitrix/modules/intec.core/classes/db/Schema.php:560
#0: intec\core\db\Schema->convertException(object, string)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/Command.php:735
#1: intec\core\db\Command->queryInternal(string, NULL)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/Command.php:280
#2: intec\core\db\Command->queryAll()
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/mysql/Schema.php:264
#3: intec\core\db\mysql\Schema->findConstraints(object)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/mysql/Schema.php:93
#4: intec\core\db\mysql\Schema->loadTableSchema(string)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/Schema.php:134
#5: intec\core\db\Schema->getTableSchema(string)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/ActiveRecord.php:168
#6: intec\core\db\ActiveRecord::getTableSchema()
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/ActiveRecord.php:210
#7: intec\core\db\ActiveRecord::populateRecord(object, array)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/ActiveQueryTrait.php:106
#8: intec\core\db\ActiveQuery->createModels(array)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/ActiveQuery.php:174
#9: intec\core\db\ActiveQuery->populate(array)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/Query.php:135
#10: intec\core\db\Query->all(NULL)
	/home/bitrix/www/bitrix/modules/intec.core/classes/db/ActiveQuery.php:89
#11: intec\core\db\ActiveQuery->all(NULL, boolean)
	/home/bitrix/www/bitrix/modules/intec.constructor/classes/models/Font.php:254
#12: intec\constructor\models\Font::findAvailable()
	/home/bitrix/www/bitrix/templates/universe_s1/meta.php:10
#13: include(string)
	/home/bitrix/www/bitrix/modules/intec.constructor/classes/models/Build.php:247
#14: intec\constructor\models\Build->getMeta(boolean)
	/home/bitrix/www/bitrix/modules/intec.constructor/classes/models/Build.php:261
#15: intec\constructor\models\Build->getMetaValue(string)
	/home/bitrix/www/bitrix/components/intec.universe/system.settings/class.php:261
#16: IntecSystemSettingsComponent->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:648
#17: CBitrixComponent->includeComponent(string, array, boolean)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#18: CAllMain->IncludeComponent(string, string, array, boolean, array)
	/home/bitrix/www/bitrix/templates/universe_s1/header.php:54
#19: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog_after.php:106
#20: require(string)
	/home/bitrix/www/bitrix/modules/main/include/prolog.php:11
#21: require_once(string)
	/home/bitrix/www/bitrix/header.php:1
#22: require(string)
	/home/bitrix/www/catalog/index.php:1
#23: include_once(string)
	/home/bitrix/www/bitrix/modules/main/include/urlrewrite.php:159
#24: 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/connection.php(330): Bitrix\Main\DB\MysqliConnection->queryInternal('SELECT \n\t`main_...', Array, NULL) #1 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(3209): Bitrix\Main\DB\Connection->query('SELECT \n\t`main_...') #2 /home/bitrix/www/bitrix/modules/main/lib/orm/query/query.php(807): Bitrix\Main\ORM\Query\Query->query('SELECT \n\t`main_...') #3 /home/bitrix/www/bitrix/modules/main/lib/orm/data/datamanager.php(500): Bitrix\Main\ORM\Query\Query->exec() #4 /home/bitrix/www/bitrix/modules/main/lib/analytics/sitespeed.php(95): Bitrix\Main\ORM\Data\DataManager::getList(Array) #5 /home/bitrix/www/bitrix/modules/main/lib/analytics/counter.php(92): Bitrix\Main\Analytics\SiteSpeed::isIntranetSite('s1') #6 /home/bitrix/www/bitrix/modules/main/classes/general/module.php(490): Bit in /home/bitrix/www/bitrix/modules/main/lib/db/mysqliconnection.php on line 137