nil function called when dropping a directory onto lönn

[microlith57]

[ERROR] [string "scenes/startup.lua"]:84: attempt to call field 'cleanFilename' (a nil value)
stack traceback:
	[string "selene_main.lua"]:39: in function 'handler'
	[string "boot.lua"]:777: in function 'cleanFilename'
	[string "scenes/startup.lua"]:84: in function <[string "scenes/startup.lua"]:83>
	[string "scene_handler.lua"]:46: in function 'sendEvent'

(from https://discord.com/channels/403698615446536203/973719043003535400/974202446719090728)

i intend to fix this