added a try except to summarization

workflows/streaming/library.py

@@ -330,9 +330,12 @@ def streaming_triplet_extraction(input_dict,widget,stream=None):
 
 def streaming_summarize_url(input_dict,widget,stream=None):
     import pyteaser
-    summaries = pyteaser.SummarizeUrl(input_dict['url'])
-    output_dict = {}
-    output_dict['summary']=" ".join(summaries)
+    try:
+        summaries = pyteaser.SummarizeUrl(input_dict['url'])
+        output_dict = {}
+        output_dict['summary']=" ".join(summaries)
+    except:
+        output_dict['summary']=''
     return output_dict
 
 def streaming_get_article_text(input_dict,widget,stream=None):