Lily Texture Packer : error expected sequence size

[Frictionless-development]

Hi, When trying to pack the textures I get this error. Any help much appreciated.
Thank you

ERROR:

Python: Traceback (most recent call last):
File "C:\Users***\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\LilyTexturePacker\frontend.py", line 50, in execute
pack_textures(self.getObjects(context), spacing=self.spacing, max_texture_size=self.max_texture_size)
File "C:\Users\j\AppData\Roaming\Blender Foundation\Blender\2.93\scripts\addons\LilyTexturePacker\packing.py", line 204, in pack_textures
img.pixels.foreach_set(pxl.ravel())
TypeError: expected sequence size -1550465652, got -1550465652

location: :-1