Did not upload excel file after app deplyment in streamlit

Dear Sir, this code works perfectly locally and uploads the Excel file correctly. However, when I try to run it after deployment, an error occurs in the Streamlit app. An error message appears and the Excel file from my computer fails to upload.

import streamlit as st
import pandas as pd

uploaded_file = st.file_uploader(“upload FK file”, type={“xlsx”})
if uploaded_file is not None:
#mfa2 = pd.read_excel(uploaded_file, sheet_name=[‘ff1’, ‘Sheet1’])
mfa2 = pd.read_excel(uploaded_file)
#st.session_state.df922 = pd.read_excel(uploaded_file, sheet_name=[‘ff1’, ‘Sheet1’])
#specific_sheet = mfa2[‘Sheet1’]
st.write(mfa2)

Looks like openpyxl is not installed.