[Error] 
Call to undefined function validate_date_birth() (0)
/var/www/vhosts/kmf.kz/httpdocs/bitrix/components/slonworks/iblock.element.add.form/component.php:207
#0: include
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/modules/main/classes/general/component.php:594
#1: CBitrixComponent->__includeComponent()
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/modules/main/classes/general/component.php:653
#2: CBitrixComponent->includeComponent(string, array, boolean)
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/modules/main/classes/general/main.php:1038
#3: CAllMain->IncludeComponent(string, string, array, boolean)
	/var/www/vhosts/kmf.kz/httpdocs/ajax/credit-index-request.php:62
#4: include(string)
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/templates/main/footer.php:271
#5: include_once(string)
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/modules/main/include/epilog_before.php:93
#6: require(string)
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/modules/main/include/epilog.php:2
#7: require_once(string)
	/var/www/vhosts/kmf.kz/httpdocs/bitrix/footer.php:4
#8: require(string)
	/var/www/vhosts/kmf.kz/httpdocs/credit-pay-online/index_old.php:9