An error occurred

Error creating bean with name 'scopedTarget.taasClient' defined in class net.geant.taas.admin.init.WebAppConfig: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public net.geant.taas.admin.client.TaasClient net.geant.taas.admin.init.WebAppConfig.taasClient() throws net.geant.taas.admin.client.WtfClientException] threw exception; nested exception is javax.ws.rs.ProcessingException: java.net.ConnectException: Connection refused