Hi we get this crash on stage 6 completion of our first silo

The mod Rocket-Silo Construction (1.3.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Rocket-Silo-Construction::on_nth_tick(60)
The mod Mining Space Industries II (0.4.9) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Mining-Space-Industries-II::script_raised_built (ID 79)
__Mining-Space-Industries-II__/control-functions.lua:457: attempt to index local 'entity' (a nil value)
stack traceback:
    __Mining-Space-Industries-II__/control-functions.lua:457: in function 'forbidden_construction_give_back_item'
    __Mining-Space-Industries-II__/control.lua:1253: in function <__Mining-Space-Industries-II__/control.lua:1229>
stack traceback:
    [C]: in function 'create_entity'
    __Rocket-Silo-Construction__/control.lua:155: in function 'upgrade_construction_site'
    __Rocket-Silo-Construction__/control.lua:185: in function 'check_construction_site'
    __Rocket-Silo-Construction__/control.lua:248: in function <__Rocket-Silo-Construction__/control.lua:243>

Seems to be related to us having moved the silo with picker dollies. Moving it back to the original position where it was allowed to build (we thought we were still within this area) enabled us to complete the stage without crashing.

One solution to prevent this problem, if not making some kind of other fix could be to block moving of the Stage entities.