This seems to conflict with other mods that patch the same methods. This prevents the sub-maps from generating correctly and causes error spam in the log if you try accessing one of them.

I have currently identified a definite conflict with the Vanilla Expanded Framework and the at least one other mod (though I can't identify which as easily), but there may well be others I haven't come across. I have included logs showing each conflict (using Tunnel & Underground to generate the sub-map, though I have seen the issue with Dungeons Core as well, which also utilises this framework).

Steps to reproduce (using Tunnel & Underground):
1. Launch a Dev Quick-test
2. Enable God Mode and place an Underground Entrance (Misc. tab)
3. Select the entrance and use the Debug: Make Excavated or Generate Custom Map widget.
4. To see additional (spammed) error: Click on the empty generated map on the colonist bar.

VEF Log: https://gist.github.com/HugsLibRecordKeeper/e1571dcb748ebfa286119b5ea9eefc74
More Complex Log: https://gist.github.com/HugsLibRecordKeeper/1243c41395abb641392087498cf08ee0