Error in vgtk.functional.rotation.py

[GitHubOKay]

thanks for your excellent work.
I get a problem when I test the model you provided.
Here is the error:
adj_idx: [array([[4, 1, 5]]), array([[0, 2]]), array([[1, 3]]), array([[2, 4, 8]]), array([[0, 3, 9]]), array([[ 0, 10]]), array([[11, 12]]), array([[12, 13]]), array([[ 3, 14]]), array([[ 4, 10, 14]]), array([[ 9, 5, 15]]), array([[ 6, 16]]), array([[ 6, 7, 17]]), array([[ 7, 18]]), array([[ 9, 8, 19]]), array([[10, 19, 16]]), array([[11, 15, 17]]), array([[12, 16, 18]]), array([[13, 17, 19]]), array([[14, 15, 18]])]
Traceback (most recent call last):
File "main.py", line 10, in
from datasets.dataset_parser import DatasetParser
File "/home/sh/jun/equi-pose/datasets/dataset_parser.py", line 18, in
from datasets.modelnet40_complete import ModelNet40Complete # complete
File "/home/sh/jun/equi-pose/datasets/modelnet40_complete.py", line 9, in
import vgtk.pc as pctk
File "/home/sh/jun/equi-pose/models/vgtk/init.py", line 5, in
from . import so3conv
File "/home/sh/jun/equi-pose/models/vgtk/so3conv/init.py", line 2, in
from .functional import *
File "/home/sh/jun/equi-pose/models/vgtk/so3conv/functional.py", line 387, in
Rs, R_idx, canonical_relative = fr.icosahedron_so3_trimesh(ANCHOR_PATH, GAMMA_SIZE)
File "/home/sh/jun/equi-pose/models/vgtk/functional/rotation.py", line 260, in icosahedron_so3_trimesh
R_adj = get_adjmatrix_trimesh(mesh, gsize)
File "/home/sh/jun/equi-pose/models/vgtk/functional/rotation.py", line 128, in get_adjmatrix_trimesh
face_adj = np.vstack(adj_idx).astype(np.int32)
File "<array_function internals>", line 6, in vstack
File "/home/sh/anaconda3/envs/jun_pvn3d/lib/python3.6/site-packages/numpy/core/shape_base.py", line 283, in vstack
return _nx.concatenate(arrs, 0)
File "<array_function internals>", line 6, in concatenate
ValueError: all the input array dimensions for the concatenation axis must match exactly, but along dimension 1, the array at index 0 has size 3 and the array at index 1 has size 2

The error may be due to 'vstack' receiving arrays of different dimensions.
Could you please give me some advice to solve this problem？
Thanks!