AssertionError: Invalid type <class 'NoneType'> for key layer_edge_indices_dir; valid types = {<class 'tuple'>, <class 'int'>, <class 'float'>, <class 'bool'>, <class 'list'>, <class 'str'>}

[PaintingProgrammer]

When I use yacs=0.1.8, I get an error KeyError: 'non-key config key: train.mode'
When I use yacs==0.1.6, I get an error AssertionError: Invalid type <class 'NoneType'> for key layer_edge_indices_dir; valid types = {<class 'tuple'>, <class 'int'>, <class 'float'>, <class 'bool'>, <class 'list'>, <class 'str'>}
I hope you can help to solve it

[jiaqingxie]

I think it's not part of a severe error since with this error the program would be still running. For me I think its bot too important during the training process. You could still get the correct result.