jpa and postgres delete : 'ERROR: number of columns (1703) exceeds limit (1664)' & fails

We are using the JPA (hibernate) and Postgres,

One of the delete operation is throwing the error 'ERROR: number of columns (1703) exceeds limit (1664)'

The delete method is as shown below and we pass clazz object as parent of all the entities.

 protected <E extends T> E delete(UUID id, Class<E> clazz) {
    log.debug("deleting entity {}", id);
    E object = getEntityManager().find(clazz, id); //clazz is parent of all the entities
    if (object != null){
        getEntityManager().remove(object);
    }
    return object;
}

Please advice

there is question here similar to this, but has no specific answer ?

Thanks