Update app.py

correction to upload

app.py

@@ -68,6 +68,9 @@ def respond(
     # Return the model's response
     return response['answer']
 
+def upload_file(filepath):
+    name = Path(filepath).name
+    return [gr.UploadButton(visible=False), gr.DownloadButton(label=f"Download {name}", value=filepath, visible=True)]
 
 # Gradio interface setup
 demo = gr.Blocks()
@@ -78,7 +81,11 @@ with demo:
         doc_input = gr.Textbox(
             lines=10, placeholder="Enter your documents here, one per line.", label="Input Documents"
         )
-        upload_button = gr.Button("Upload Documents")
+        # upload_button = gr.Button("Upload Documents")
+        with gr.Row():
+            u = gr.UploadButton("Upload a file", file_count="single")
+        u.upload(upload_file, u, [u, d])
+        
     
     with gr.Row():
         # Chat interface for the RAG system