The mod Space Exploration (0.3.73) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event space-exploration::on_tick (ID 0)
The mod Construction Drones (0.6.3) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Construction_Drones::on_entity_cloned (ID 119)
Construction_Drones/script/construction_drone.lua:642: attempt to call global 'add_character' (a nil value)
stack traceback:
Construction_Drones/script/construction_drone.lua:642: in function 'on_built_entity'
Construction_Drones/script/construction_drone.lua:2188: in function 'handler'
core/lualib/event_handler.lua:47: in function <core/lualib/event_handler.lua:45>
stack traceback:
space-exploration/scripts/spaceship.lua:529: in function 'launch'
space-exploration/scripts/spaceship.lua:2845: in function 'stop_integrity_check'
space-exploration/scripts/spaceship.lua:3117: in function 'integrity_check_tick'
space-exploration/scripts/spaceship.lua:2378: in function 'spaceship_tick'
space-exploration/scripts/spaceship.lua:2636: in function 'callback'
space-exploration/scripts/event.lua:14: in function <space-exploration/scripts/event.lua:12>
stack traceback:
[C]: in function 'clone_area'
space-exploration/scripts/spaceship.lua:529: in function 'launch'
space-exploration/scripts/spaceship.lua:2845: in function 'stop_integrity_check'
space-exploration/scripts/spaceship.lua:3117: in function 'integrity_check_tick'
space-exploration/scripts/spaceship.lua:2378: in function 'spaceship_tick'
space-exploration/scripts/spaceship.lua:2636: in function 'callback'
space-exploration/scripts/event.lua:14: in function <space-exploration/scripts/event.lua:12>