White Textures on the Ground on Campaign Critical Path

What went wrong?
White textures on the ground along side a lava flow in “The Ancient Caven - Ancient Era, -6020 BE” during the Main Quest: Saving Last Refuge

Log File
Player.log (1.3 MB)

Screenshots or video, if applicable
https://i.imgur.com/oK88QJ8.png

Cheers!