The mod Redo (0.2.7) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event redo::undo (ID 258)
LuaSurface API call when LuaSurface was invalid.
stack traceback:
[C]: in function 'index'
__redo/control.lua:444: in function 'find_existing_entity'
redo/control.lua:630: in function 'input_action'
redo/control.lua:640: in function <redo/control.lua:640>

Looking back through old posts and found this, I have no idea if this is fixed or not but at least I am aware of it now :P