Hey there,
the discord links have expired, would you be able to provide more information or another image?
I have tried to replicate the out of bounds error by opening a new map, zooming all the way out and clicking into the void to draw a shape with concrete, also placing space platform foundation out of bounds. Both of these did not cause an error.
Further, I've take a quick look at the code and I don't see any debug output in my version so if you can give a copy of the message it might help me find it.
Thanks for using my mod!