Update app.py

app.py

@@ -91,7 +91,7 @@ def CTXGen(X0, X3, X1, X2, τ, g_num, model_name):
         start_time = time.time()
         while count < gen_num:
             new_seq = None
-            gen_len = len(X0)
+            gen_len = len(X3)
             if is_stopped:
                 return "output.csv", pd.DataFrame()