Output weightmap crashed

Your bug report should include:

  1. What happened
    i use a lot of Polygon shape to create a huge terrain,8K height, i also use combiner to make this shape together, everything fine until i export weightmap. i only use select slope,height,wetness node, do not have complex node. i tried many times to export, but it does not work.

  2. Does it happen consistently, or randomly?

by the way, height map output is work