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java.lang.NullPointerException: 	at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.rulesOf(StandardModelFactories.java:146)	at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories.access$100(StandardModelFactories.java:53)	at com.amazonaws.services.dynamodbv2.datamodeling.StandardModelFactories$ConversionSchemaFactory.getModelFactory(StandardModelFactories.java:80)	at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.getTableModel(DynamoDBMapper.java:392)	at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1946)	at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1935)	at com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper.toParameters(DynamoDBMapper.java:1965)	at com.amazonaws.services.dynamodbv2.datamodeling.PaginatedQueryList.(PaginatedQueryList.java:66)	at org.socialsignin.spring.data.dynamodb.core.DynamoDBTemplate.query(DynamoDBTemplate.java:191)	at org.socialsignin.spring.data.dynamodb.query.MultipleEntityQueryRequestQuery.getResultList(MultipleEntityQueryRequestQuery.java:38)	at org.socialsignin.spring.data.dynamodb.repository.query.AbstractDynamoDBQuery$CollectionExecution.execute(AbstractDynamoDBQuery.java:103)	at org.socialsignin.spring.data.dynamodb.repository.query.AbstractDynamoDBQuery.execute(AbstractDynamoDBQuery.java:288)	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:462)	at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:440)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:61)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:92)	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:208)