Every time a nuke explodes, i get this error. Any ideas?

Die Mod True Nukes (0.0.6) hat einen Fehler verursacht, der nicht behoben werden kann.
Bitte informiere den Autor der Mod über diesen Fehler.

Error while running event True-Nukes::on_tick (ID 0)
Die Mod Maps (1.0.5) hat einen Fehler verursacht, der nicht behoben werden kann.
Bitte informiere den Autor der Mod über diesen Fehler.

Error while running event Maps::on_entity_died (ID 4)
Maps/control.lua:233: attempt to index local 'cause' (a nil value)
stack traceback:
Maps/control.lua:233: in function <Maps/control.lua:214>
stack traceback:
True-Nukes/control.lua:56: in function <True-Nukes/control.lua:8>
stack traceback:
[C]: in function 'damage'
True-Nukes/control.lua:56: in function <True-Nukes/control.lua:8>

Hi, thanks for reporting the bug.
Were you running any other mods at the same time, and what version of Factorio are you using?
Thanks again, and sorry for taking so long to respond!

OK, so found the other mod, Maps
This seems to be a problem on their end. The same crash occurs if you kill a tree using poison.
Their mod assumes that any entity death will have a cause directly attributed to it.
I'm going to give them a bug report, and link it to this.
Thanks anyway, I really can't find these bugs if nobody says.

The report is here:
https://mods.factorio.com/mod/Maps/discussion/5f9c1bd0cf0d84e1fd00f488

Thanks for the report. This has been fixed in Maps 1.0.6. :-)