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Exception in thread "main" org.hibernate.exception.SQLGrammarException: could not fetch initial value for increment generator
    at org.hibernate.exception.SQLStateConverter.convert(SQLStateConverter.java:67)
    at org.hibernate.exception.JDBCExceptionHelper.convert(JDBCExceptionHelper.java:43)
    at org.hibernate.id.IncrementGenerator.getNext(IncrementGenerator.java:107)
    at org.hibernate.id.IncrementGenerator.generate(IncrementGenerator.java:44)
    at org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:91)
    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:186)
    at org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:175)
    at org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
    at org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
    at org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:530)
    at org.hibernate.impl.SessionImpl.save(SessionImpl.java:518)
    at org.hibernate.impl.SessionImpl.save(SessionImpl.java:514)
    at Test.main(Test.java:18)
Caused by: org.postgresql.util.PSQLException: ERROR: column "id" does not exist
    at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:1512)
    at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1297)
    at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:188)
    at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:430)
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:346)
    at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:250)
    at org.hibernate.id.IncrementGenerator.getNext(IncrementGenerator.java:85)
    ... 11 more
14:21:38,614  WARN JDBCExceptionReporter:71 - SQL Error: 0, SQLState: 42703
14:21:38,614 ERROR JDBCExceptionReporter:72 - ERROR: column "id" does not exist | 
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