Update app.py

app.py

@@ -184,11 +184,15 @@ def _get_bioportal_data(ontology: str, term: str) -> Optional[Dict]:
     }
 
     url = f"{API_ENDPOINTS['bioportal']}/search"
-
     try:
         response = requests.get(url, headers=headers, params=params, timeout=15)
         response.raise_for_status()
-        return response.json()
+        data = response.json()
+        if data and 'collection' in data:
+            return data
+        else:
+            st.warning("No results found for the BioPortal query.")
+            return None
     except requests.exceptions.RequestException as e:
         st.error(f"BioPortal API request failed: {e} Please check connectivity and ensure you have the correct API Key.")
         logging.error(f"BioPortal API request failed: {e}")