lazyInitializationException как с ней бороться?

@Async
public void generate(int generateJobId){
    try {
        jobInfoService.setStatus(generateJobId,"IN_PROGRESS");
        List<Section> sections = sectionService.getAll();
        String filepath = helper.generateXlsx(sections, generateJobId);
        jobInfoService.setFilepath(generateJobId, filepath);
        jobInfoService.setStatus(generateJobId,"DONE");
    } catch (Exception e) {
        jobInfoService.setStatus(generateJobId,"ERROR");
    }
}

@Repository
public interface SectionRepository extends JpaRepository<Section, Long> {
    List<Section> findAllByGeologicalClasses_codeLikeIgnoreCase(String code);
}

@Transactional
int getMaxLength(List<Section> sections){
    Comparator<Section> comparator = Comparator.comparingInt(s -> s.getGeologicalClasses().size());
    Hibernate.initialize(sections);
    int maxSize = sections.stream().max(comparator).get().getGeologicalClasses().size();
 
    return maxSize;
}

@Transactional(readOnly = true)
public List<Section> getAll(){
    return repository.findAll();
}
 
@Transactional(readOnly = true)
public List<Section> getAllFullData(){
    List<Section> sections = repository.findAll();
    sections.forEach(section -> section.getGeologicalClasses().size());
    return sections;
}

@Repository
public interface SectionRepository extends JpaRepository<Section, Long> {
    @Query("SELECT * FROM section e JOIN FETCH e.geologicalClasses")
    List<Section> findAllFullData();
 
    List<Section> findAllByGeologicalClasses_codeLikeIgnoreCase(String code);
}