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java.lang.NullPointerException: null	at org.molgenis.data.postgresql.PostgreSqlQueryGenerator.getSqlColumnConstraints(PostgreSqlQueryGenerator.java:455)	at org.molgenis.data.postgresql.PostgreSqlQueryGenerator.getSqlColumn(PostgreSqlQueryGenerator.java:444)	at org.molgenis.data.postgresql.PostgreSqlQueryGenerator.getSqlCreateTable(PostgreSqlQueryGenerator.java:149)	at org.molgenis.data.postgresql.PostgreSqlRepositoryCollection.createTable(PostgreSqlRepositoryCollection.java:551)	at org.molgenis.data.postgresql.PostgreSqlRepositoryCollection.createRepository(PostgreSqlRepositoryCollection.java:105)	at org.molgenis.data.RepositoryCollectionDecorator.createRepository(RepositoryCollectionDecorator.java:53)	at org.molgenis.data.reindex.ReindexActionRepositoryCollectionDecorator.createRepository(ReindexActionRepositoryCollectionDecorator.java:89)	at org.molgenis.data.meta.EntityMetaDataRepositoryDecorator.addEntityMetaData(EntityMetaDataRepositoryDecorator.java:360)	at org.molgenis.data.meta.EntityMetaDataRepositoryDecorator.add(EntityMetaDataRepositoryDecorator.java:326)	at org.molgenis.data.meta.EntityMetaDataRepositoryDecorator.add(EntityMetaDataRepositoryDecorator.java:52)	at org.molgenis.data.EntityReferenceResolverDecorator.add(EntityReferenceResolverDecorator.java:195)	at org.molgenis.data.listeners.EntityListenerRepositoryDecorator.add(EntityListenerRepositoryDecorator.java:178)	at org.molgenis.data.validation.RepositoryValidationDecorator.add(RepositoryValidationDecorator.java:80)	at org.molgenis.data.AutoValueRepositoryDecorator.add(AutoValueRepositoryDecorator.java:46)	at org.molgenis.data.RepositorySecurityDecorator.add(RepositorySecurityDecorator.java:181)	at org.molgenis.data.support.DataServiceImpl.add(DataServiceImpl.java:92)	at org.molgenis.data.support.DataServiceImpl$$FastClassBySpringCGLIB$$2e5f77dc.invoke()	at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)	at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157)	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99)	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281)	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)	at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653)	at org.molgenis.data.support.DataServiceImpl$$EnhancerBySpringCGLIB$$39d0d10d.add()	at org.molgenis.data.rest.RestController.createInternal(RestController.java:1063)	at org.molgenis.data.rest.RestController.createFromFormPost(RestController.java:531)