File upload error

[Dima1]

Hi, while creating an application to read and visualise excel files for my students I am facing an issue of

ValueError: Invalid file path or buffer object type: <class ‘NoneType’>

The traceback error being;

However, after the file upload the application does not show any error

Please help in debugging the application to make the home screen clear
Thanks,

[Faltawer]

It look like you need to add a condition

if upload_document is not None:
 #YOURCODE
else:
  st.write('Please provide a file')

[SiddhantSadangi]

Add a guard condition

if uploaded_file := st.file_uploader(...):
    dataframe = pd.read_excel(uploaded_file, ...)
    ...
else:
    st.warning("Upload file to continue")