Update app.py

app.py

@@ -9,16 +9,25 @@ st.sidebar.title("Whatsapp Chat Analyzer")
 uploaded_file = st.sidebar.file_uploader("Choose a file")
 if uploaded_file is not None:
     bytes_data = uploaded_file.read()
-    
-    # Detect encoding
+
+    # Detect the encoding
     result = chardet.detect(bytes_data)
     encoding = result['encoding']
-    
-    # Decode the bytes to string using the detected encoding
-    data = bytes_data.decode(encoding)
+
+    # Fallback to utf-8 if encoding is None
+    if encoding is None:
+        encoding = 'utf-8'  # or 'latin1' if utf-8 fails
+
+    # Decode with the detected or fallback encoding
+    try:
+        data = bytes_data.decode(encoding)
+    except UnicodeDecodeError:
+        # If utf-8 decoding fails, fallback to latin1
+        data = bytes_data.decode('latin1')
+
     df = preprocessor.preprocess(data)
 
-    # fetch unique users
+    # Fetch unique users
     user_list = df['user'].unique().tolist()
     user_list.remove('group_notification')
     user_list.sort()