diff --git a/paddlespeech/s2t/frontend/utility.py b/paddlespeech/s2t/frontend/utility.py
index 703f2127d7e71b093030658f6d88c45979770c61..d423a60447b48b6be218afd06a13e6ce355a31ea 100644
--- a/paddlespeech/s2t/frontend/utility.py
+++ b/paddlespeech/s2t/frontend/utility.py
@@ -102,10 +102,10 @@ def read_manifest(
     manifest = []
     with jsonlines.open(manifest_path, 'r') as reader:
         for json_data in reader:
-            feat_len = json_data["feat_shape"][
-                0] if 'feat_shape' in json_data else 1.0
-            token_len = json_data["token_shape"][
-                0] if 'token_shape' in json_data else 1.0
+            feat_len = json_data["input"][0]["shape"][
+                0] if 'shape' in json_data["input"][0] else 1.0
+            token_len = json_data["output"][0]["shape"][
+                0] if 'shape' in json_data["output"][0] else 1.0
             conditions = [
                 feat_len >= min_input_len,
                 feat_len <= max_input_len,
diff --git a/paddlespeech/s2t/io/sampler.py b/paddlespeech/s2t/io/sampler.py
index 35b57524b5906d53366ebc1c8d4b36322129bba2..0d5a16ce10a25b8234ad3bc6244b2828f350f092 100644
--- a/paddlespeech/s2t/io/sampler.py
+++ b/paddlespeech/s2t/io/sampler.py
@@ -51,7 +51,7 @@ def _batch_shuffle(indices, batch_size, epoch, clipped=False):
     """
     rng = np.random.RandomState(epoch)
     shift_len = rng.randint(0, batch_size - 1)
-    batch_indices = list(zip(* [iter(indices[shift_len:])] * batch_size))
+    batch_indices = list(zip(*[iter(indices[shift_len:])] * batch_size))
     rng.shuffle(batch_indices)
     batch_indices = [item for batch in batch_indices for item in batch]
     assert clipped is False
diff --git a/paddlespeech/s2t/utils/checkpoint.py b/paddlespeech/s2t/utils/checkpoint.py
index 5105f95efaebf4347a0d13b4383a1db962835308..4c493715a4d25daeb2b3736c3f306443fb73503a 100644
--- a/paddlespeech/s2t/utils/checkpoint.py
+++ b/paddlespeech/s2t/utils/checkpoint.py
@@ -94,6 +94,9 @@ class Checkpoint():
         """
         configs = {}
 
+        if len(checkpoint_path) == 0 or checkpoint_path == "None":
+            checkpoint_path = None
+
         if checkpoint_path is not None:
             pass
         elif checkpoint_dir is not None and record_file is not None: