Update app.py

app.py

@@ -27,14 +27,14 @@ def pdf_to_document_store(pdf_files):
 
 
 def summarize(files):
+    logging.info(files)
     if files is not None:
-        document_store.delete_all_documents()
         pdf_to_document_store(files)
     return document_store.get_document_count()
 
 title = "Summarize one or more PDFs with a Haystack Summariser pipeline"
 iface = gr.Interface(fn=summarize, 
-                    inputs=gr.inputs.File(file_count="multiple", type="file", label="Upload some PDFs"),
+                    inputs=gr.inputs.File(file_count="single", type="file", label="Upload some PDFs"),
                     outputs="text",
                     title=title,
                     theme="default")