Update app.py

app.py

@@ -44,9 +44,12 @@ def inference(query, k=30):
         date = doc.metadata.get('date', 'None')
         link = doc.metadata.get('link', 'None')
         submitter = doc.metadata.get('submitter', 'None')
-        journal = doc.metadata.get('journal', 'None').strip()
-        if journal == '':
+        # journal = doc.metadata.get('journal', 'None').strip()
+        journal = doc.metadata['journal']
+        if (journal == None or journal.strip() == ''):
             journal = 'None'
+        else:
+            journal = journal.strip()
         # For journals
         if journal not in j_bucket:
             j_bucket[journal] = score