[TypeError] 
usort(): Argument #1 ($array) must be of type array, null given (0)
/var/www/bitrix/data/www/xn--90aeea2bghkbmep4j.xn--p1ai/narody-peterburga/ethnocalendar/index_area.php:620
#0: usort(NULL, string)
	/var/www/bitrix/data/www/xn--90aeea2bghkbmep4j.xn--p1ai/narody-peterburga/ethnocalendar/index_area.php:620
#1: include(string)
	/var/www/bitrix/data/www/aommo.ru/bitrix/components/bitrix/main.include/templates/.default/template.php:17
#2: include(string)
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component_template.php:790
#3: CBitrixComponentTemplate->__IncludePHPTemplate(array, array, string)
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component_template.php:885
#4: CBitrixComponentTemplate->IncludeTemplate(array)
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component.php:784
#5: CBitrixComponent->showComponentTemplate()
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component.php:724
#6: CBitrixComponent->includeComponentTemplate()
	/var/www/bitrix/data/www/aommo.ru/bitrix/components/bitrix/main.include/component.php:280
#7: include(string)
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component.php:615
#8: CBitrixComponent->__includeComponent()
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/component.php:692
#9: CBitrixComponent->includeComponent(string, array, NULL, boolean)
	/var/www/bitrix/data/www/aommo.ru/bitrix/modules/main/classes/general/main.php:1195
#10: CAllMain->IncludeComponent(string, string, array)
	/var/www/bitrix/data/www/xn--90aeea2bghkbmep4j.xn--p1ai/narody-peterburga/ethnocalendar/index.php:40
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