The mod Factorissimo 2 - notnotmelon fork (1.0.0) caused a non-recoverable error.
Please report this error to the mod author.
Error while running event factorissimo-2-notnotmelon::on_robot_built_entity (ID 14)
factorissimo-2-notnotmelon/control.lua:1294: bad argument #0 of 1 to 'spill_item_stack' (Wrong number of arguments.)
stack traceback:
[C]: in function 'spill_item_stack'
factorissimo-2-notnotmelon/control.lua:1294: in function 'cancel_creation'
factorissimo-2-notnotmelon/control.lua:839: in function <factorissimo-2-notnotmelon/control.lua:807>
The crash doesn't happen with the ghost placement itself, but rather when your personal construction bot attempts to actually build the panel.
(Nice touch with blocking it by entity type.)