[ArgumentCountError] 
Too few arguments to function CConference::DayDateFormat(), 1 passed in /home/bitrix/conferences/ifip/www/bitrix/templates/tmp_s1_intellectual_property_2017/components/bitrix/conf.news.list/main_news_powerfull/template.php on line 25 and exactly 3 expected (0)
/home/bitrix/conferences/ifip/www/bitrix/modules/conference/classes/general/conference.php:253
#0: CConference::DayDateFormat(string)
	/home/bitrix/conferences/ifip/www/bitrix/templates/tmp_s1_intellectual_property_2017/components/bitrix/conf.news.list/main_news_powerfull/template.php:25
#1: include(string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component_template.php:720
#2: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component_template.php:815
#3: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:685
#4: CBitrixComponent->showComponentTemplate()
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:633
#5: CBitrixComponent->includeComponentTemplate()
	/home/bitrix/conferences/ifip/www/bitrix/components/bitrix/conf.news.list/component.php:340
#6: include(string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:551
#7: CBitrixComponent->__includeComponent()
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:603
#8: CBitrixComponent->includeComponent(string, array, object)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/main.php:1041
#9: CAllMain->IncludeComponent(string, string, array, object)
	/home/bitrix/conferences/ifip/www/bitrix/templates/tmp_s1_intellectual_property_2017/components/bitrix/conf.news/.default/news.php:81
#10: include(string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component_template.php:720
#11: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component_template.php:815
#12: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:685
#13: CBitrixComponent->showComponentTemplate()
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:633
#14: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/conferences/ifip/www/bitrix/components/bitrix/conf.news/component.php:143
#15: include(string)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:551
#16: CBitrixComponent->__includeComponent()
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/component.php:603
#17: CBitrixComponent->includeComponent(string, array, NULL)
	/home/bitrix/conferences/ifip/www/bitrix/modules/main/classes/general/main.php:1041
#18: CAllMain->IncludeComponent(string, string, array)
	/home/bitrix/conferences/ifip/www/intellectual_property_2017/about/news/index.php:19