diff --git a/openstl/api/exp.py b/openstl/api/exp.py
index 77f233b5..8325690d 100644
--- a/openstl/api/exp.py
+++ b/openstl/api/exp.py
@@ -92,13 +92,13 @@ def _get_data(self, dataloaders=None):
         return BaseDataModule(train_loader, vali_loader, test_loader)
 
     def train(self):
-        self.trainer.fit(self.method, self.data)
+        self.trainer.fit(self.method, self.data.train_loader)
 
     def test(self):
         if self.args.test == True:
             ckpt = torch.load(osp.join(self.save_dir, 'checkpoints', 'best.ckpt'))
             self.method.load_state_dict(ckpt['state_dict'])
-        self.trainer.test(self.method, self.data)
+        self.trainer.test(self.method, self.data.test_loader)
     
     def display_method_info(self, args):
         """Plot the basic infomation of supported methods"""
@@ -142,4 +142,4 @@ def display_method_info(self, args):
             fps = 'Throughputs of {}: {:.3f}\n'.format(args.method, fps)
         else:
             fps = ''
-        return info, flops, fps, dash_line
\ No newline at end of file
+        return info, flops, fps, dash_line
diff --git a/openstl/utils/config_utils.py b/openstl/utils/config_utils.py
index b5714449..71b36588 100644
--- a/openstl/utils/config_utils.py
+++ b/openstl/utils/config_utils.py
@@ -5,6 +5,7 @@
 import sys
 import ast
 from importlib import import_module
+import os
 
 '''
 Thanks the code from https://github.com/open-mmlab/mmcv/blob/master/mmcv/utils/config.py wrote by Open-MMLab.
@@ -58,8 +59,10 @@ def _substitute_predefined_vars(filename, temp_config_name):
             regexp = r'\{\{\s*' + str(key) + r'\s*\}\}'
             value = value.replace('\\', '/')
             config_file = re.sub(regexp, value, config_file)
-        with open(temp_config_name, 'w') as tmp_config_file:
-            tmp_config_file.write(config_file)
+        # with open(temp_config_name, 'w') as tmp_config_file:
+        #     tmp_config_file.write(config_file)
+        temp_config_file = open(temp_config_name, 'w')
+        temp_config_file.write(config_file)
 
     @staticmethod
     def _file2dict(filename, use_predefined_variables=True):
@@ -71,7 +74,7 @@ def _file2dict(filename, use_predefined_variables=True):
 
         with tempfile.TemporaryDirectory() as temp_config_dir:
             temp_config_file = tempfile.NamedTemporaryFile(
-                dir=temp_config_dir, suffix=fileExtname)
+                dir=temp_config_dir, suffix=fileExtname, delete=False)
             temp_config_name = osp.basename(temp_config_file.name)
 
             # Substitute predefined variables
@@ -96,6 +99,7 @@ def _file2dict(filename, use_predefined_variables=True):
                 del sys.modules[temp_module_name]
             # close temp file
             temp_config_file.close()
+            os.remove(temp_config_file.name)
         return cfg_dict
 
     @staticmethod
diff --git a/openstl/utils/main_utils.py b/openstl/utils/main_utils.py
index 6374c831..6ec90850 100644
--- a/openstl/utils/main_utils.py
+++ b/openstl/utils/main_utils.py
@@ -128,13 +128,15 @@ def get_batch_size(H, W):
 
 def load_config(filename:str = None):
     """load and print config"""
-    print('loading config from ' + filename + ' ...')
+    print('loading config from ' + filename)
     try:
         configfile = Config(filename=filename)
         config = configfile._cfg_dict
-    except (FileNotFoundError, IOError):
-        config = dict()
-        print('warning: fail to load the config!')
+    except Exception as e:
+        raise Exception('error in load the config:{}'.format(e))
+    # except (FileNotFoundError, IOError):
+    #     config = dict()
+    #     print('warning: fail to load the config!')
     return config
 
 
@@ -177,4 +179,4 @@ def get_dist_info() -> Tuple[int, int]:
     else:
         rank = 0
         world_size = 1
-    return rank, world_size
\ No newline at end of file
+    return rank, world_size
diff --git a/tools/train.py b/tools/train.py
index 8df10a6b..e665a39f 100644
--- a/tools/train.py
+++ b/tools/train.py
@@ -29,10 +29,10 @@
                 config[attribute] = default_values[attribute]
 
     print('>'*35 + ' training ' + '<'*35)
-    exp = BaseExperiment(args)
+    exp = BaseExperiment(args, strategy='auto')
     rank, _ = get_dist_info()
     exp.train()
 
     if rank == 0:
         print('>'*35 + ' testing  ' + '<'*35)
-    mse = exp.test()
\ No newline at end of file
+    mse = exp.test()