[Bitrix\Main\DB\ConnectionException] 
Mysql connect error [localhost]: (2006) MySQL server has gone away (400)
/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/lib/db/mysqliconnection.php:65
#0: Bitrix\Main\DB\MysqliConnection->connectInternal()
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/lib/db/mysqliconnection.php:122
#1: Bitrix\Main\DB\MysqliConnection->queryInternal(string, array, NULL)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/lib/db/connection.php:330
#2: Bitrix\Main\DB\Connection->query(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/php_interface/include/1c_update/redirect.php:13
#3: include(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/php_interface/init.php:134
#4: func_inc(string, integer)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/php_interface/init.php:66
#5: start_red()
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/php_interface/init.php:63
#6: include_once(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/include.php:241
#7: require_once(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/include/prolog_before.php:14
#8: require_once(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/urlrewrite_add.php:2
#9: include(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/modules/main/include/urlrewrite.php:61
#10: include_once(string)
	/home/web/xn--96-jlc3bkw.xn--p1ai/www/bitrix/urlrewrite.php:2