The request entity was in the blueprint. I'd be happy to provide more info if needed.
The mod Spidertron Logistics System (2.1.6) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event spidertron-logistics::on_player_setup_blueprint (ID 69)
Index out of bounds: 859 > 0.
stack traceback:
[C]: in function 'set_blueprint_entity_tag'
spidertron-logistics/control.lua:832: in function 'save_blueprint_data'
spidertron-logistics/control.lua:844: in function <spidertron-logistics/control.lua:839>