Update app.py

app.py

@@ -90,7 +90,7 @@ def main():
     st.title('Sentiment Analysis')
     st.markdown('Upload an Excel file to get sentiment analytics')
 
-    uploaded_file = st.file_uploader("Upload an excel file", type=['xlsx'])
+    uploaded_file = st.file_uploader("Upload an excel file", type=['xlsx'], key='unique')
     review_column = None
     df = None
     class_names = None  # New variable for class names