[Error] 
Cannot use string offset as an array (0)
/opt1/site/httpdocs/bitrix/modules/main/lib/config/option.php:261
#0: Bitrix\Main\Config\Option::set(string, string, string, string)
	/opt1/site/httpdocs/bitrix/modules/main/classes/general/option.php:42
#1: CAllOption::SetOptionString(string, string, string)
	/opt1/site/httpdocs/bitrix/modules/main/classes/general/main.php:3449
#2: CAllMain::GetServerUniqID()
	/opt1/site/httpdocs/bitrix/modules/main/classes/mysql/agent.php:60
#3: CAgent::ExecuteAgents(string)
	/opt1/site/httpdocs/bitrix/modules/main/classes/mysql/agent.php:38
#4: CAgent::CheckAgents()
	/opt1/site/httpdocs/bitrix/modules/main/include.php:271
#5: require_once(string)
	/opt1/site/httpdocs/bitrix/modules/main/include/prolog_before.php:14
#6: require_once(string)
	/opt1/site/httpdocs/bitrix/modules/main/include/prolog.php:10
#7: require_once(string)
	/opt1/site/httpdocs/bitrix/header.php:1
#8: require(string)
	/opt1/site/httpdocs/alphabet/index.php:1
#9: include_once(string)
	/opt1/site/httpdocs/bitrix/modules/main/include/urlrewrite.php:159
#10: include_once(string)
	/opt1/site/httpdocs/bitrix/urlrewrite.php:2