Update app.py

app.py

@@ -106,26 +106,27 @@ def sidebar():
         st.subheader("Your documents")
         pdf_docs = st.file_uploader("For Chatbot to get alive, upload your PDFs here and click on 'Process'", accept_multiple_files=True)
 
-    
+        vectorstore = None
+        conversation = None
 
         if st.button("Process"):
-            with st.spinner("Processing"):
-                if pdf_docs:
-                # get pdf text
+            if pdf_docs:
+                with st.spinner("Processing"):
+                    # get pdf text
                     raw_text = get_pdf_text(pdf_docs)
 
-                
+                    # get the text chunks
                     text_chunks = get_text_chunks(raw_text)
 
-                # create vector store
+                    # create vector store
                     vectorstore = get_vectorstore(text_chunks)
 
-                
+                    # create conversation chain
                     conversation = get_conversation_chain()
 
                     st.success("Files have been processed into a vector store.")
-
-                    return vectorstore , conversation
+    
+    return vectorstore, conversation