1560.822 Script @blueprint-sandboxes/scripts/isolation.lua:22: Detected isolation level: full
1797.710 Script @Kux-BlueprintExtensions/actions/landfill.lua:229: landfill_action
1797.712 Error MainLoop.cpp:1510: Exception at tick 28688162: The mod Kuxynator's Blueprint Extensions (3.3.16) caused a non-recoverable error.
Please report this error to the mod author.

Error while running event Kux-BlueprintExtensions::Kux-BlueprintExtensions_landfill (ID 650)
Kux-BlueprintExtensions/modules/geom2d.lua:127: bad argument #1 of 2 to 'unpack' (table expected, got nil)
stack traceback:
[C]: in function 'unpack'
Kux-BlueprintExtensions/modules/geom2d.lua:127: in function 'rotate'
Kux-BlueprintExtensions/actions/landfill.lua:295: in function <Kux-BlueprintExtensions/actions/landfill.lua:228>
(...tail calls...)

When I take a blueprint with items in hand and press strl+shift+L I get:

Error while running event Kux-BlueprintExtensions::Kux-BlueprintExtensions_landfill (ID 324)
LuaRecord doesn't contain key label.
stack traceback:
[C]: in function 'index'
__Kux-BlueprintExtensions/modules/util.lua:60: in function 'index'
__Kux-BlueprintExtensions/actions/landfill.lua:329: in function <Kux-BlueprintExtensions/actions/landfill.lua:228>
(...tail calls...)