message: Correct the endpoint ret.
diff: @@ -214,7 +214,7 @@ pub fn get_entry_points() -> EntryPoints {
  let entry_point = EntryPoint::new(
  METHOD_GET_ERA_VALIDATORS,
  vec![],
  - ValidatorWeights::cl_type(),
  + Option::<ValidatorWeights>::cl_type(),
  EntryPointAccess::Public,
  EntryPointType::Contract,
  );
  