Update app.py

app.py

@@ -471,9 +471,9 @@ def create_index():
             for k in ea['keywords']:
                 print(k)
                 print(ea['file_name'])
-                if ind[k]:
+                if k in ind:
                     
-                    ind[k]=ind[k].append(ea['file_name'])
+                    ind[k]=ea['file_name']
                 else:
                     ind.append({k:[ea['file_name']]})
         except Exception as e: