fix bugs

model_zoo/gpt-3/ppfleetx/models/language_model/gpt/dygraph/single_model.py

@@ -1077,7 +1077,7 @@ def _post_process_(outputs, input_ids, cur_len, origin_len, scores, unfinished_f
 
         attn_mask = model_kwargs["attention_mask"]
         # make the shape of attention_mask = (-1, -1, -1, -1) in dy2static.
-        paddle.jit.dy2static.utils_helper.set_dynamic_shape(model_kwargs["attention_mask"], [-1, -1, -1, -1])
+        paddle.jit.api.set_dynamic_shape(model_kwargs["attention_mask"], [-1, -1, -1, -1])
         model_kwargs["cache"] = outputs[1] if isinstance(outputs, tuple) else None
         if hasattr(paddle.framework, "_no_check_dy2st_diff"):
             # TODO(wanghuancoder): _no_check_dy2st_diff is used to turn off the checking of behavior