Update app.py

app.py

@@ -131,7 +131,7 @@ except Exception as e:
     if ssh_tunnel_server and ssh_tunnel_server.is_active:
         ssh_tunnel_server.stop()
 
-sample_doc = solr_client.search(q=":*",rows=1).docs
+sample_doc = solr_client.search(q="*:*",rows=1).docs
 
 # UPDATED: This is the structured metadata you will feed into your LLM prompt.
 field_metadata = [