diff --git a/app.py b/app.py
index 0b5c66ac0..830edf340 100644
--- a/app.py
+++ b/app.py
@@ -137,11 +137,15 @@ def analyze_and_show_res():
     analyzer = Analyser(cfg)
     dataset = analyzer.run()
 
-    analysis_res_ori = pd.read_csv(
-        os.path.join(analyzer.analysis_path, 'overall.csv'))
-    for f_path in os.listdir(analyzer.analysis_path):
-        if '.png' in f_path and 'all-stats' in f_path:
-            images_ori.append(os.path.join(analyzer.analysis_path, f_path))
+    overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+    analysis_res_ori = pd.DataFrame()
+    if os.path.exists(overall_file):
+        analysis_res_ori = pd.read_csv(overall_file)
+
+    if os.path.exists(analyzer.analysis_path):
+        for f_path in os.listdir(analyzer.analysis_path):
+            if '.png' in f_path and 'all-stats' in f_path:
+                images_ori.append(os.path.join(analyzer.analysis_path, f_path))
 
     st.session_state.dataset = dataset
     st.session_state.original_overall = analysis_res_ori
@@ -171,12 +175,16 @@ def process_and_show_res():
         analyzer.analysis_path = os.path.dirname(
             cfg_for_processed_data.export_path) + '/analysis'
         analyzer.run()
-        analysis_res_processed = pd.read_csv(
-            os.path.join(analyzer.analysis_path, 'overall.csv'))
-        for f_path in os.listdir(analyzer.analysis_path):
-            if '.png' in f_path and 'all-stats' in f_path:
-                images_processed.append(
-                    os.path.join(analyzer.analysis_path, f_path))
+
+        overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+        if os.path.exists(overall_file):
+            analysis_res_processed = pd.read_csv(overall_file)
+
+        if os.path.exists(analyzer.analysis_path):
+            for f_path in os.listdir(analyzer.analysis_path):
+                if '.png' in f_path and 'all-stats' in f_path:
+                    images_processed.append(
+                        os.path.join(analyzer.analysis_path, f_path))
     except Exception as e:
         st.warning(f'Something error with {str(e)}')
 
@@ -221,6 +229,8 @@ class Visualize:
 
     @staticmethod
     def filter_dataset(dataset):
+        if Fields.stats not in dataset:
+            return 
         text_key = st.session_state.get('text_key', 'text')
         text = dataset[text_key]
         stats = pd.DataFrame(dataset[Fields.stats])
diff --git a/demos/data_process_loop/app.py b/demos/data_process_loop/app.py
index a1ae3d01e..901efd9b9 100644
--- a/demos/data_process_loop/app.py
+++ b/demos/data_process_loop/app.py
@@ -96,11 +96,15 @@ def analyze_and_show_res():
     analyzer = Analyser(cfg)
     analyzed_dataset = analyzer.run()
 
-    analysis_res_ori = pd.read_csv(
-        os.path.join(analyzer.analysis_path, 'overall.csv'))
-    for f_path in os.listdir(analyzer.analysis_path):
-        if '.png' in f_path and 'all-stats' in f_path:
-            images_ori.append(os.path.join(analyzer.analysis_path, f_path))
+    overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+    analysis_res_ori = pd.DataFrame()
+    if os.path.exists(overall_file):
+        analysis_res_ori = pd.read_csv(overall_file)
+
+    if os.path.exists(analyzer.analysis_path):
+        for f_path in os.listdir(analyzer.analysis_path):
+            if '.png' in f_path and 'all-stats' in f_path:
+                images_ori.append(os.path.join(analyzer.analysis_path, f_path))
 
     st.session_state.analyzed_dataset = analyzed_dataset
     st.session_state.original_overall = analysis_res_ori
@@ -132,12 +136,16 @@ def process_and_show_res():
             analyzer.analysis_path = os.path.dirname(
                 cfg_for_processed_data.export_path) + '/analysis'
             analyzer.run()
-            analysis_res_processed = pd.read_csv(
-                os.path.join(analyzer.analysis_path, 'overall.csv'))
-            for f_path in os.listdir(analyzer.analysis_path):
-                if '.png' in f_path and 'all-stats' in f_path:
-                    images_processed.append(
-                        os.path.join(analyzer.analysis_path, f_path))
+            
+            overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+            if os.path.exists(overall_file):
+                analysis_res_processed = pd.read_csv(overall_file)
+                
+            if os.path.exists(analyzer.analysis_path):
+                for f_path in os.listdir(analyzer.analysis_path):
+                    if '.png' in f_path and 'all-stats' in f_path:
+                        images_processed.append(
+                            os.path.join(analyzer.analysis_path, f_path))
         else:
             st.warning('No sample left after processing. Please change \
                 anther dataset or op parameters then rerun')
diff --git a/demos/data_visualization_op_effect/app.py b/demos/data_visualization_op_effect/app.py
index 0e6f60fc8..c5a944cf5 100644
--- a/demos/data_visualization_op_effect/app.py
+++ b/demos/data_visualization_op_effect/app.py
@@ -108,11 +108,15 @@ def analyze_and_show_res(dataset_file):
     analyzer = Analyser(cfg)
     dataset = analyzer.run()
 
-    analysis_res_ori = pd.read_csv(
-        os.path.join(analyzer.analysis_path, 'overall.csv'))
-    for f_path in os.listdir(analyzer.analysis_path):
-        if '.png' in f_path and 'all-stats' in f_path:
-            images_ori.append(os.path.join(analyzer.analysis_path, f_path))
+    overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+    analysis_res_ori = pd.DataFrame()
+    if os.path.exists(overall_file):
+        analysis_res_ori = pd.read_csv(overall_file)
+        
+    if os.path.exists(analyzer.analysis_path):
+        for f_path in os.listdir(analyzer.analysis_path):
+            if '.png' in f_path and 'all-stats' in f_path:
+                images_ori.append(os.path.join(analyzer.analysis_path, f_path))
 
     st.session_state.dataset = dataset
     st.session_state.original_overall = analysis_res_ori
@@ -316,7 +320,8 @@ def op_effect_analyze():
 
     @staticmethod
     def filter_dataset(dataset):
-
+        if Fields.stats not in dataset:
+            return 
         text_key = st.session_state.get('text_key', 'text')
         text = dataset[text_key]
         stats = pd.DataFrame(dataset[Fields.stats])
diff --git a/demos/data_visualization_statistics/app.py b/demos/data_visualization_statistics/app.py
index 2c9e9c966..e4f14f1bc 100644
--- a/demos/data_visualization_statistics/app.py
+++ b/demos/data_visualization_statistics/app.py
@@ -93,11 +93,15 @@ def analyze_and_show_res(dataset_file):
     analyzer = Analyser(cfg)
     dataset = analyzer.run()
 
-    analysis_res_ori = pd.read_csv(
-        os.path.join(analyzer.analysis_path, 'overall.csv'))
-    for f_path in os.listdir(analyzer.analysis_path):
-        if '.png' in f_path and 'all-stats' in f_path:
-            images_ori.append(os.path.join(analyzer.analysis_path, f_path))
+    overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+    analysis_res_ori = pd.DataFrame()
+    if os.path.exists(overall_file):
+        analysis_res_ori = pd.read_csv(overall_file)
+        
+    if os.path.exists(analyzer.analysis_path):
+        for f_path in os.listdir(analyzer.analysis_path):
+            if '.png' in f_path and 'all-stats' in f_path:
+                images_ori.append(os.path.join(analyzer.analysis_path, f_path))
 
     st.session_state.dataset = dataset
     st.session_state.original_overall = analysis_res_ori
diff --git a/demos/overview_scan/app.py b/demos/overview_scan/app.py
index 064e65240..d3fbbc000 100644
--- a/demos/overview_scan/app.py
+++ b/demos/overview_scan/app.py
@@ -204,11 +204,15 @@ def run_demo():
         with st.spinner('Wait for analyze...'):
             analyzer.run()
 
-        analysis_res_ori = pd.read_csv(
-            os.path.join(analyzer.analysis_path, 'overall.csv'))
-        for f_path in os.listdir(analyzer.analysis_path):
-            if '.png' in f_path and 'all-stats' in f_path:
-                images_ori.append(os.path.join(analyzer.analysis_path, f_path))
+        overall_file = os.path.join(analyzer.analysis_path, 'overall.csv')
+        analysis_res_ori = pd.DataFrame()
+        if os.path.exists(overall_file):
+            analysis_res_ori = pd.read_csv(overall_file)
+            
+        if os.path.exists(analyzer.analysis_path):
+            for f_path in os.listdir(analyzer.analysis_path):
+                if '.png' in f_path and 'all-stats' in f_path:
+                    images_ori.append(os.path.join(analyzer.analysis_path, f_path))
 
         st.subheader('Statistics')
         st.dataframe(analysis_res_ori, use_container_width=True)