Update app.py

app.py

@@ -72,10 +72,12 @@ if clear_button:
     counter_placeholder.write(f"Next item ...")
 
 # Insert a file uploader that accepts multiple files at a time
-uploaded_file = st.file_uploader("Choose a CSV file")
+with st.sidebar:
+    uploaded_file = st.file_uploader("Choose a CSV file")
+
 if uploaded_file is not None:
     # Success message
-    st.success("File uploaded successfully.")
+    st.sidebar.success("File uploaded successfully.")
 
     # Can be used wherever a "file-like" object is accepted:
     df = pd.read_csv(uploaded_file)