エラーの内容 Traceback (most recent call last): File "chapter14.py", line 146, in <module> feature_mask, edge_mask = explainer.explain_graph(data.x, data.edge_index) File "C:\Users\XYZZZ\AppData\Local\Programs\Python\Python37\lib\site-packages\torch_geometric\explain\algorithm\gnn_explainer.py", line 315,…