spring-data-neo4j: random mapping record error

Hi, I am also facing an error in which a record could not be mapped. The tricky part is that this error is intermittent after upgrading SDN to 6.3.1(spring boot 2.7.1), sometime happens sometimes not, it is working well with SDN 6.2.4(spring boot 2.6.7)

controller (full page is here)

@RequestMapping
public void Image(){
    ReactionLikeEvent rle = getReactionLikeEvent(identifier);
}

private ReactionLikeEvent getReactionLikeEvent(String id) {
        ReactionLikeEvent rle;
        try {
            rle = databaseObjectService.findById(id);
        } catch (ClassCastException e) {
            throw new DiagramExporterException(String.format("The identifier '%s' does not correspond to a 'ReactionLikeEvent'", id));
        }
        if (rle == null) throw new NotFoundException(String.format("Identifier '%s' not found", id));
        return rle;
}

service(full page is here)

@Service
public class DatabaseObjectService {

    private final DatabaseObjectRepository databaseObjectRepository;

    public DatabaseObjectService(DatabaseObjectRepository databaseObjectRepository) {
        this.databaseObjectRepository = databaseObjectRepository;
    }

    public <T extends DatabaseObject> T findById(Object identifier) {
        T rtn = null;
        String id = DatabaseObjectUtils.getIdentifier(identifier);
        if (DatabaseObjectUtils.isStId(id)) {
            rtn = databaseObjectRepository.findByStId(id);
        } else if (DatabaseObjectUtils.isDbId(id)) {
            rtn = databaseObjectRepository.findByDbId(Long.parseLong(id));
        }
        if (rtn != null) rtn.isLoaded = true;
        return rtn;
    }
}

repository(full page is here)

@Repository
public class DatabaseObjectRepository {

    private final Neo4jTemplate neo4jTemplate;
    private final Neo4jClient neo4jClient;

    @Value("${spring.data.neo4j.database:graph.db}")
    private String databaseName;

    @Autowired
    public DatabaseObjectRepository(Neo4jTemplate neo4jTemplate, Neo4jClient neo4jClient) {
        this.neo4jTemplate = neo4jTemplate;
        this.neo4jClient = neo4jClient;
    }

    public <T extends DatabaseObject> T findByStId(String stId) {
        String query = "MATCH (a:DatabaseObject{stId:$stId})-[r]-(m) RETURN a, COLLECT(r), COLLECT(m)";
        return (T) neo4jTemplate.findOne(query, Map.of("stId", stId), DatabaseObject.class).orElse(null);
    }
}

data model: ReactioneLikeEvent class.

Event class

DatabaseObject class

error message is, it is not easy to produce the error as it happens randomly.

org.springframework.data.mapping.MappingException: Error mapping Record<{a: node<1630761>, COLLECT(r): [relationship<6837398>, relationship<6837397>, relationship<6837396>, relationship<6837395>, relationship<6837392>, relationship<6837391>, relationship<6837390>, relationship<6837389>, relationship<6837388>, relationship<6837387>, relationship<6837386>, relationship<6837385>, relationship<6837384>, relationship<6837383>, relationship<6837382>, relationship<6837381>, relationship<6837380>, relationship<6837379>, relationship<6837378>], COLLECT(m): [node<1630669>, node<1629976>, node<1630748>, node<1630762>, node<8>, node<1629971>, node<789490>, node<1629968>, node<1630684>, node<1629858>, node<789284>, node<135593>, node<245>, node<1630748>, node<789282>, node<1630741>, node<1630738>, node<167296>, node<1630743>]}>
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.read(DefaultNeo4jEntityConverter.java:122)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.read(DefaultNeo4jEntityConverter.java:71)
	at org.springframework.data.neo4j.core.mapping.Schema.lambda$getRequiredMappingFunctionFor$0(Schema.java:96)
	at org.springframework.data.neo4j.core.PreparedQuery$AggregatingMappingFunction.apply(PreparedQuery.java:246)
	at org.springframework.data.neo4j.core.PreparedQuery$AggregatingMappingFunction.apply(PreparedQuery.java:158)
	at org.springframework.data.neo4j.core.DelegatingMappingFunctionWithNullCheck.apply(DelegatingMappingFunctionWithNullCheck.java:45)
	at org.springframework.data.neo4j.core.DelegatingMappingFunctionWithNullCheck.apply(DelegatingMappingFunctionWithNullCheck.java:35)
	at org.springframework.data.neo4j.core.DefaultNeo4jClient$DefaultRecordFetchSpec.one(DefaultNeo4jClient.java:455)
	at java.base/java.util.Optional.flatMap(Optional.java:294)
	at org.springframework.data.neo4j.core.Neo4jTemplate$DefaultExecutableQuery.getSingleResult(Neo4jTemplate.java:1030)
	at org.springframework.data.neo4j.core.Neo4jTemplate.findOne(Neo4jTemplate.java:246)
	at org.reactome.server.graph.repository.DatabaseObjectRepository.findByStId(DatabaseObjectRepository.java:36)
	at org.reactome.server.graph.repository.DatabaseObjectRepository$$FastClassBySpringCGLIB$$64a0d279.invoke(<generated>)
	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137)
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763)
	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708)
	at org.reactome.server.graph.repository.DatabaseObjectRepository$$EnhancerBySpringCGLIB$$c29edc64.findByStId(<generated>)
	at org.reactome.server.graph.service.DatabaseObjectService.findById_aroundBody0(DatabaseObjectService.java:32)
	at org.reactome.server.graph.service.DatabaseObjectService.findById_aroundBody1$advice(DatabaseObjectService.java:33)
	at org.reactome.server.graph.service.DatabaseObjectService.findById(DatabaseObjectService.java:1)
	at org.reactome.server.service.controller.exporter.ImageExporterController.getReactionLikeEvent(ImageExporterController.java:262)
    at org.reactome.server.service.controller.exporter.ImageExporterController.reactionImage(ImageExporterController.java:221)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:655)
    at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:72)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764)
	at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:167)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.reactome.server.service.utils.CustomRequestFilter.doFilterInternal(CustomRequestFilter.java:34)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.reactome.server.service.utils.CustomRequestFilter.doFilterInternal(CustomRequestFilter.java:34)
	at org.springframework.test.web.servlet.setup.PatternMappingFilterProxy.doFilter(PatternMappingFilterProxy.java:100)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
	at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:199)
	at org.reactome.server.service.utils.BaseTest.mockMvcGetResult(BaseTest.java:69)
	at org.reactome.server.service.controller.exporter.ImageExporterControllerTest.reactionImage(ImageExporterControllerTest.java:38)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
	at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
Caused by: org.springframework.data.mapping.model.MappingInstantiationException: Failed to instantiate org.reactome.server.graph.domain.model.ReactionLikeEvent using constructor public org.reactome.server.graph.domain.model.ReactionLikeEvent() with arguments 
	at org.springframework.data.mapping.model.ClassGeneratingEntityInstantiator$MappingInstantiationExceptionEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:358)
	at org.springframework.data.mapping.model.ClassGeneratingEntityInstantiator.createInstance(ClassGeneratingEntityInstantiator.java:102)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.instantiate(DefaultNeo4jEntityConverter.java:462)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.lambda$map$2(DefaultNeo4jEntityConverter.java:286)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.map(DefaultNeo4jEntityConverter.java:305)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.map(DefaultNeo4jEntityConverter.java:259)
	at org.springframework.data.neo4j.core.mapping.DefaultNeo4jEntityConverter.read(DefaultNeo4jEntityConverter.java:120)
	... 134 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.reactome.server.graph.domain.model.ReactionLikeEvent]: Class is abstract
	... 141 common frames omitted

References:

our service Github repo:  https://github.com/reactome/content-service

graph core Github repo: https://github.com/reactome/graph-core/

it would be great if you have any ideas about it and thank you so much for your help.