The mod Telogistics (1.0.26) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Telogistics::on_gui_opened (ID 98)
Unknown item name: maraxsis-limestone
stack traceback:
[C]: in function 'add'
Telogistics/control.lua:882: in function 'setup_custom_teleporter_gui'
Telogistics/control.lua:787: in function <Telogistics/control.lua:775>

What's super odd is it was working before so must have been from an update by Miraxsis.

Did you have a Link ID set to the Maraxis limestone?

I know that Maraxis changed its internal name recently, which would cause that Link ID to become invalid, so you'll get an error when opening the teleporter. You can work around the problem by removing the teleporter and putting it back, or by pasting settings from a teleporter with a different Link ID.

Ah. Okay I'll try that thanks.