[SVD img2vid] TypeError: unsupported operand type(s) for *=: 'int' and 'NoneType'

Comfy installed on Ubuntu 22.04 VM running on Proxmox
Loading: ComfyUI-Manager (V1.3)
ComfyUI Revision: 1733 [e020ab61] | Released on '2023-11-24'

Trying to run simple workflow from here: https://comfyanonymous.github.io/ComfyUI_examples/video/

Appears to be unable to load model due to permission issues?? svd model in `ComfyUI/models/checkpoints`

`Prompt executed in 13.67 seconds
got prompt
0%| | 0/20 [00:00 b c t h w", t=num_video_frames)
File "/home/xxxxxxxx/.local/lib/python3.10/site-packages/einops/einops.py", line 483, in rearrange
return reduce(cast(Tensor, tensor), pattern, reduction='rearrange', **axes_lengths)
File "/home/xxxxxxxx/.local/lib/python3.10/site-packages/einops/einops.py", line 412, in reduce
return _apply_recipe(recipe, tensor, reduction_type=reduction)
File "/home/xxxxxxxx/.local/lib/python3.10/site-packages/einops/einops.py", line 235, in _apply_recipe
_reconstruct_from_shape(recipe, backend.shape(tensor))
File "/home/xxxxxxxx/.local/lib/python3.10/site-packages/einops/einops.py", line 187, in _reconstruct_from_shape_uncached
known_product *= axes_lengths[axis]
TypeError: unsupported operand type(s) for *=: 'int' and 'NoneType'
`