message: [bugfix] address issue 4206
  closes 4206
diff: @@ -279,6 +279,8 @@ class TableModelView(DatasourceModelView, DeleteMixin, YamlExportMixin): # noqa
  __('Refresh column metadata'),
  'fa-refresh')
  def refresh(self, tables):
  + if not isinstance(tables, list):
  + tables = [tables]
  for t in tables:
  t.fetch_metadata()
  msg = _(
  