I have a similar but possibly not identical failure with a ghost, and do have "Ghost in Hand" installed:
The mod Schall Radar Alignment (0.18.1) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event SchallRadarAlignment::on_player_changed_position (ID 82)
LuaItemPrototype doesn't contain key is_blueprint.
stack traceback:
__SchallRadarAlignment__/control.lua:6: in function 'find_radar_in_blueprint'
__SchallRadarAlignment__/control.lua:82: in function 'refresh_radar'
__SchallRadarAlignment__/control.lua:94: in function <__SchallRadarAlignment__/control.lua:93>
stack traceback:
[C]: in function '__index'
__SchallRadarAlignment__/control.lua:6: in function 'find_radar_in_blueprint'
__SchallRadarAlignment__/control.lua:82: in function 'refresh_radar'
__SchallRadarAlignment__/control.lua:94: in function <__SchallRadarAlignment__/control.lua:93>