this is log file extract

655.782 Error MainLoop.cpp:1205: Exception at tick 73098209: The mod Schall Uncraft (0.18.0) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event SchallUncraft::event-uncraft-all (ID 175)
LuaEquipment API call when LuaEquipment was invalid.
stack traceback:
[C]: in function 'take'
SchallUncraft/control.lua:19: in function 'pre_uncraft_unload_equipment'
SchallUncraft/control.lua:80: in function 'uncraft_stack'
SchallUncraft/control.lua:117: in function <SchallUncraft/control.lua:111>
stack traceback:
[C]: in ?
[C]: in function 'take'
SchallUncraft/control.lua:19: in function 'pre_uncraft_unload_equipment'
SchallUncraft/control.lua:80: in function 'uncraft_stack'
SchallUncraft/control.lua:117: in function <SchallUncraft/control.lua:111>

the tank had 3 batteries, uranium shell, hard bullet and flamethrower ammo

Thanks for reporting.
Game 0.18.26 has made some preliminary yet big changes to equipment handling API, and the "main" part on next week (supposedly) 0.18.27. So perhaps I will put this on hold, wait for 0.18.27, and solve it in one go.

PS: If you are using my other mod "Schall Gun Pod", you can use the "Unload Gun Pod" shortcut to avoid the crash.

Thanks for the patience.
This should be fixed in 0.18.1.