message: [form-data] Quoting form data
diff: @@ -12,6 +12,7 @@ import pickle
  import re
  import time
  import traceback
  +from urllib import parse
  import sqlalchemy as sqla
  @@ -946,7 +947,7 @@ class Superset(BaseSupersetView):
  .format(
  viz_obj.datasource.type,
  viz_obj.datasource.id,
  - json.dumps(viz_obj.form_data)
  + parse.quote(json.dumps(viz_obj.form_data)),
  )
  )
  if request.args.get("standalone") == "true":
  