Update app.py

app.py

@@ -225,12 +225,14 @@ def process_input(text_input, file):
         file_name = file.name
         
         if file_name.endswith('.txt'):
-            file.seek(0)  # Đảm bảo con trỏ file ở đầu
-            content = file.read()
-            if isinstance(content, bytes):
-                content = content.decode('utf-8')  # Giải mã nếu cần
-            comments += [line.strip() for line in content.splitlines() if line.strip()]
-  
+            try:
+                content = file.read()
+                if isinstance(content, bytes):
+                    content = content.decode('utf-8')
+            except UnicodeDecodeError:
+                content = file.read().decode('utf-8-sig')
+            comments += [line.strip() for line in content.splitlines() if line.strip()] 
+        
         elif file_name.endswith('.csv'):
             df = pd.read_csv(file)
             comments += df.iloc[:, 0].dropna().astype(str).tolist()