Update app.py

app.py

@@ -154,7 +154,6 @@ def visualize_subTaraf(df, yaxis):
     isnad_hadith['Teacher'] = isnad_hadith['Teacher'].apply(lambda x: x[0] if len(x)==1 else 'فلان')
     isnad_hadith['Student'] = isnad_hadith['Student'].apply(lambda x: x[0] if len(x)==1 else 'فلان')
 
-    end_nodes = df['End Transmitter ID'].tolist() 
     G = nx.from_pandas_edgelist(isnad_hadith, source = 'Source', target = 'Destination', create_using = nx.DiGraph())
     isnad_pos = nx.nx_agraph.graphviz_layout(G, prog='dot')
     x_stretch = 4