NX 12.0.2 Documentation Error

Hello Experts,

last week we upgraded the NX version to 12.0.2 in our organization, actually after upgraded NX works properly, but in docs, we are getting Error multi times,

before we think its problem in installing or etc, but after install again we faced it again, actually we can not get help from offline in documents help, we can not work properly without it, 

we are using Windows 10 O.S., NX 12.0.2 upgraded, JAVA 8 update 111 currently.

we attached error massage below in attachment, is there anybody know about that, then please help us. Thanks