Error while running event bigger-artillery::on_robot_pre_mined (ID 15)
control.lua:15 attempt to index field '?' (a nil value)
control.lua:15 in function control.lua:13

Your error seems to be related to your savegame. I don't get an error when I use robots to mine the artillery.
Can you send your savegame?
Maybe you could fix it when you change the mod settings, because then it should reset a necessary variable.
Do you have power consumption enabled?

Here's the save (sandbox mode, base 1.1.25, bigger-artillery 0.4.0): https://send.vis.ee/download/e66fe7bc04cbdd79/#a3Ixru6tWZtxnzp7KB3h-A
Power consumption enabled by default. If I disable it everything works fine, no crash.

I see. It happens when a robot mines a loaded artillery.
It is fixed in version 0.4.1.

bonjour, j'ai eu le même souci hier, en voulais la faire déposer par un robot, cela m'a générer un crash.

Can you please send the error message?
Please describe exactly what happened.
What mod version do you have?
I don’t speak French, but this is the message translated with “google translate”:
Pouvez-vous s'il vous plaît envoyer le message d'erreur?
Veuillez décrire exactement ce qui s'est passé.
Quelle version de module as-tu ?