Wiki

[TypeError] 
Cannot assign null to property Bitrix\Main\Data\Cache::$ttl of type int (0)
/home/bitrix/www/bitrix/modules/main/lib/data/cache.php:282
#0: Bitrix\Main\Data\Cache->initCache
	/home/bitrix/www/bitrix/modules/main/lib/data/managedcache.php:49
#1: Bitrix\Main\Data\ManagedCache->read
	/home/bitrix/www/bitrix/modules/main/classes/general/cache_manager.php:34
#2: CCacheManager->Read
	/home/bitrix/www/bitrix/modules/wiki/classes/general/wiki.php:1012
#3: CWiki::IsPageUpdated
	/home/bitrix/www/bitrix/components/bitrix/wiki.show/component.php:169
#4: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:607
#5: CBitrixComponent->__includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:684
#6: CBitrixComponent->includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1072
#7: CAllMain->IncludeComponent
	/home/bitrix/www/bitrix/components/bitrix/wiki/templates/.default/index.php:27
#8: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:790
#9: CBitrixComponentTemplate->__IncludePHPTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component_template.php:885
#10: CBitrixComponentTemplate->IncludeTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:776
#11: CBitrixComponent->showComponentTemplate
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:716
#12: CBitrixComponent->includeComponentTemplate
	/home/bitrix/www/bitrix/components/bitrix/wiki/component.php:167
#13: include(string)
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:607
#14: CBitrixComponent->__includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/component.php:684
#15: CBitrixComponent->includeComponent
	/home/bitrix/www/bitrix/modules/main/classes/general/main.php:1072
#16: CAllMain->IncludeComponent
	/home/bitrix/www/Encyclopedia/wiki/index.php:9
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