Update app.py

app.py

@@ -142,6 +142,7 @@ def main():
 
     
     with st.sidebar:
+        import pandas as pd
         st.subheader("Your excel file")
         xls_docs = st.file_uploader("Upload your PDFs here and click on 'Process'", accept_multiple_files=True,type=['csv'])
         if xls_docs is not None: