Update app.py

app.py

@@ -4,6 +4,7 @@ from huggingface_hub import ModelCard, HfApi
 import requests
 import networkx as nx
 import matplotlib.pyplot as plt
+from matplotlib.patches import Patch
 from collections import defaultdict
 from networkx.drawing.nx_pydot import graphviz_layout
 from io import BytesIO