Update app.py

app.py

@@ -49,7 +49,9 @@ def get_definition_and_image(word):
     # URL for the ImageNet API
     base_url = "http://www.image-net.org/api/text/imagenet.synset.geturls?wnid="
     
-    # Cofrom PIL import Image mbine the base URL and the synset ID to get a list of image URLs
+    if not synset_id: return None,None
+    
+        # Cofrom PIL import Image mbine the base URL and the synset ID to get a list of image URLs
     url = base_url + synset_id
     
     # Send a GET request to the URL