It is a switch from Gimp 2.8 pixelize plugin to the Gimp 2.10 GEGL pixelize function which causes the error.
I do not know if ofnuts plugin can be updated but the easiest way is 'borrow' the Gimp 2.8 pixelize.exe plugin (zipped & attached)
Put that in with the luminosity-tiler-0.1.py plugin in your plugins folder.
You need a source image and a "stack of small tiles" image
Goes like this: https://i.imgur.com/psRXjjx.mp4 remember this is just a demo, smaller better tiles required.
I do not know if ofnuts plugin can be updated but the easiest way is 'borrow' the Gimp 2.8 pixelize.exe plugin (zipped & attached)
Put that in with the luminosity-tiler-0.1.py plugin in your plugins folder.
You need a source image and a "stack of small tiles" image
Goes like this: https://i.imgur.com/psRXjjx.mp4 remember this is just a demo, smaller better tiles required.