Update app.py

app.py

@@ -338,8 +338,8 @@ def visualize_narrator_taraf(taraf_num, narrator, yaxis):
             matns_with_narrator.append(taraf_hadith[i])
             for n in node:
                 if n not in list(end_node.keys()):
-                    end_node[n] = []
-                end_node[n].append(i)
+                    end_node[str(n)] = []
+                end_node[str(n)].append(i)