Update app.py

app.py

@@ -85,7 +85,7 @@ def create_dynamic_table(table_name, columns):
         metadata_obj,
   Column('id', Integer, primary_key=True),
         *[Column(name, type_) for name, type_ in columns.items()],
-        extend_existing=True
+        # extend_existing=True
     )
     return table