[Error] 
Call to a member function format() on null (0)
/home/bitrix/www/local/lib/Oneway/Repertoire/RepertoireService.php:55
#0: Oneway\Repertoire\RepertoireService->getMonthDto(object)
	/home/bitrix/www/local/lib/Oneway/Repertoire/RepertoireService.php:43
#1: Oneway\Repertoire\RepertoireService->getRepertoireForMonth(object)
	/home/bitrix/www/local/components/oneway/repertoire/class.php:24
#2: RepertoireComponent->getRepertoire()
	/home/bitrix/www/local/components/oneway/repertoire/class.php:18
#3: RepertoireComponent->executeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:648
#4: CBitrixComponent->includeComponent(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#5: CAllMain->IncludeComponent(string, string)
	/home/bitrix/www/local/templates/.default/components/bitrix/news/repertoire/news.php:15
#6: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:725
#7: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:820
#8: CBitrixComponentTemplate->IncludeTemplate(array)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:745
#9: CBitrixComponent->showComponentTemplate()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:693
#10: CBitrixComponent->includeComponentTemplate(string)
	/home/bitrix/www/bitrix/components/bitrix/news/component.php:216
#11: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:604
#12: CBitrixComponent->__includeComponent()
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:663
#13: CBitrixComponent->includeComponent(string, array, NULL)
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1039
#14: CAllMain->IncludeComponent(string, string, array)
	/home/bitrix/www/repertoire/index.php:10