[Error] 
Call to a member function GetUserGroupArray() on string (0)
/home/c/cv30741/public_html/bitrix/modules/form/classes/general/form_callform.php:287
#0: CAllForm::GetPermission(integer)
	/home/c/cv30741/public_html/bitrix/modules/form/classes/mysql/form_cformresult.php:25
#1: CFormResult::GetList(integer, string, string, array, NULL, string)
	/home/c/cv30741/public_html/bitrix/modules/form/lib/senderconnector.php:69
#2: Bitrix\Form\SenderConnectorForm->getData()
	/home/c/cv30741/public_html/bitrix/modules/sender/lib/connector.php:176
#3: Bitrix\Sender\Connector->getResult()
	/home/c/cv30741/public_html/bitrix/modules/sender/lib/posting.php:282
#4: Bitrix\Sender\PostingTable::initGroupRecipients(string)
	/home/c/cv30741/public_html/bitrix/modules/sender/lib/mailingchain.php:285
#5: Bitrix\Sender\MailingChainTable::initPosting(string)
	/home/c/cv30741/public_html/bitrix/modules/sender/lib/mailingmanager.php:267
#6: Bitrix\Sender\MailingManager::checkPeriod()
	/home/c/cv30741/public_html/bitrix/modules/main/classes/mysql/agent.php(163) : eval()'d code:1
#7: eval
	/home/c/cv30741/public_html/bitrix/modules/main/classes/mysql/agent.php:163
#8: CAgent::ExecuteAgents(string)
	/home/c/cv30741/public_html/bitrix/modules/main/classes/mysql/agent.php:40
#9: CAgent::CheckAgents()
	/home/c/cv30741/public_html/bitrix/modules/main/include.php:263
#10: require_once(string)
	/home/c/cv30741/public_html/bitrix/modules/main/include/prolog_before.php:14
#11: require_once(string)
	/home/c/cv30741/public_html/bitrix/modules/main/include/prolog.php:10
#12: require_once(string)
	/home/c/cv30741/public_html/bitrix/header.php:1
#13: require(string)
	/home/c/cv30741/public_html/articles/index.php:2
#14: include_once(string)
	/home/c/cv30741/public_html/bitrix/modules/main/include/urlrewrite.php:159
#15: include_once(string)
	/home/c/cv30741/public_html/bitrix/urlrewrite.php:2