two bugs fixed

app.py

@@ -188,7 +188,7 @@ def visualize_isnad(taraf_num, yaxis):
             label = f'{node_name} \n ID: {node} - Gen {student_gen}'
             size = 70
             font_color = 'black'
-        elif node in end_nodes:
+        elif str(node) in end_nodes:
             hadith_numbers = end_node_data.get(node, '')
             label += f' \n Hadith {hadith_numbers}'
         net.add_node(node, font={'size': 30, 'color': font_color}, color=value_to_hex(student_narrations), label=label, x=pos[0] * x_stretch, y=-pos[1] * y_stretch, size=size)
@@ -344,7 +344,7 @@ def visualize_narrator_taraf(taraf_num, narrator, yaxis):
 
     # Process each hadith in taraf_hadith_split
     for idx, split_hadith in enumerate(taraf_hadith):
-        isnad_hadith1 = isnad_info.iloc[lookup_hadith(taraf_hadith[i], HADITH_LOOKUP)]
+        isnad_hadith1 = isnad_info.iloc[lookup_hadith(taraf_hadith[idx], HADITH_LOOKUP)]
         G1 = nx.from_pandas_edgelist(isnad_hadith1, source='Source', target='Destination', create_using=nx.DiGraph())
         if narrator in G1.nodes:
             matns_with_narrator.append(taraf_hadith[idx])