github link: https://github.com/Xcone/factorio_pump/issues/40

Hi!, thanks for the report. I am going to a need a little more then that to be able to do something about the error, though. This bit only shows where the error occurred, but not how to avoid it.

Can you provide a save file? You can attach it to github issue you already made.
And also a short description what I need to do within your save-file so I can reproduce the error myself?

Once I can produce the error myself, I should be able to trace what's going wrong and make changes to avoid it.

my save file is too big for github; but you can reproduce via doing the following:

make an oil patch in SE's nauvis orbit using editor mode; then use PUMP to make the plan.

Can you provide a save file made in the editor that way then?

I don't really know the editor very well, and I've been trying to run with SE, but I just get errors.
A save file allows me to press 'sync mods' and stuff just works and gets me straight into the bit I need to look at.