PLEASE HELP.. Errors after import Asset (Book Of The Dead: Environment)

Hello,

ive tried to remove it but there are still errors and the scene is black, i can run it but i cant see anything like in the scene window


I have unity Version 2018.4.1


other asset i am using
https://assetstore.unity.com/packag...ro-military-customizable-fps-character-125288


Errors Picture:

https://forum.unity.com/threads/please-help-errors-after-import-asset-book-of-the-dead-environment.706535/

I think it works on 2018.3.14f1