Error while using class MessagePassing

[rmngllnn]

Hello,

I'm trying to run a repo which use PyG. repo is given with data, training checkpoint, precise command to run ... so I'm assuming it's "plug and play". When running the repo, an error occured. As I trace the error, I see it's in the MessagePassing class. I see nod_dim is set by default to -2.

I guess, normally, it's updated with graph construction of the data but it's not. Could you see what could cause this error ?

This is the error I get :

 File "C:\...\Python\Python39\lib\site-packages\torch_geometric\nn\conv\message_passing.py", line 201, in __collect__
    self.__set_size__(size, dim, data)
  File "C:\...\Python\Python39\lib\site-packages\torch_geometric\nn\conv\message_passing.py", line 163, in __set_size__
    size[dim] = src.size(self.node_dim)
IndexError: Dimension out of range (expected to be in range of [-1, 0], but got -2)```

I hope I'm clear and if not I can give more information 😄 

[rusty1s]

You may want to ensure that your node features inside data are two-dimensional: assert data.x.dim() == 2.