这是哪里出现了错误

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@GetMapping("/illustration/{id}")
public ModelAndView showIllustration(@PathVariable("id") Long id) {
    Illustration illustration = illustrationService.selectIllustration(id);
    List<Evaluation> evaluationList = evaluationService.selectByIllustrationId(id);
    ModelAndView mav = new ModelAndView("/illustration");
    mav.addObject("illustration", illustration);
    mav.addObject("evaluationList", evaluationList);
    return mav;
}

@Override
@Transactional(propagation = Propagation.NOT_SUPPORTED,readOnly = true)
public Illustration selectIllustration(Long illustrationId) {
    Illustration illustration = illustrationMapper.selectById(illustrationId);
    return illustration;
}

@Override
public List<Evaluation> selectByIllustrationId(Long illustrationId) {
    Illustration illustration = illustrationMapper.selectById(illustrationId);
    QueryWrapper<Evaluation> queryWrapper = new QueryWrapper<Evaluation>();
    queryWrapper.eq("illustration_id", illustrationId);
    queryWrapper.orderByDesc("create_time");
    List<Evaluation> evaluationList = evaluationMapper.selectList(queryWrapper);
    for (Evaluation eva : evaluationList) {
        User user = userMapper.selectById(eva.getUserId());
        eva.setUser(user);
        eva.setIllustration(illustration);
    }
return evaluationList;
}