after making changes in "Edit Map settings"

The mod Subsurface - build beneath your base! (1.1.26) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Subsurface::on_player_mined_entity (ID 74)
Unknown variable: subsurface_seed
stack traceback:
[C]: in function 'calculate_tile_properties'
Subsurface/scripts/resources.lua:22: in function 'calculate_resources'
Subsurface/scripts/resources.lua:34: in function 'place_resources'
Subsurface/control.lua:331: in function 'clear_subsurface'
Subsurface/control.lua:649: in function <Subsurface/control.lua:643>

also got this one when mining a surface bent conveyer, not sure if its the same issue, but its referencing the same id

The mod Subsurface - build beneath your base! (1.1.26) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Subsurface::on_player_mined_entity (ID 74)
Subsurface/scripts/elevators.lua:270: bad argument #1 of 2 to 'ipairs' (table expected, got nil)
stack traceback:
[C]: in function 'ipairs'
Subsurface/scripts/elevators.lua:270: in function 'elevator_removed'
Subsurface/control.lua:647: in function <Subsurface/control.lua:643>

For the 1st issue, the problem is that applying gen settings resets things that my mod relies to. But the mod is deprecated. Just don't press Apply in subsurfaces.
Regarding the 2nd, does the belt elevator show direction indicators when hovering it?

it seemed to not matter which one i mined to get the crash, or if it was mined or destroyed, didnt affect pipes at all, appears to be one facing V and the other is ^, if i try to rotate either, they also crash the game.

Can you send me your savegame?

https://limewire.com/d/s7W7G#qra3HFUpN5

saved right near a belt conveyer just to the north and east next to the factory

Can't find an item elevator...Is it a belt tier added by a mod? Which?

the belt in quesiton is the one added by this mod for moving between surfaces, its attached to the factory when the load takes place, on the top left corner