[cnc] startup fails due to NPE in KibanaController

[EHJ-52n]

Exception Log

 org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'streamController': Invocation of init method failed; nested exception is java.lang.NullPointerException
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:138)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:423)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1702)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:583)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:312)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:327)
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:137)
    at org.n52.stream.seadatacloud.cnc.CnCService.main(CnCService.java:58)
[...]
 Caused by: java.lang.NullPointerException: null
    at java.util.regex.Matcher.appendReplacement(Matcher.java:804)
    at java.util.regex.Matcher.replaceAll(Matcher.java:955)
    at java.lang.String.replaceAll(String.java:2223)
    at org.n52.stream.seadatacloud.cnc.kibana.KibanaController.getVisualizationNode(KibanaController.java:323)
    at org.n52.stream.seadatacloud.cnc.kibana.KibanaController.createVisualization(KibanaController.java:269)
    at org.n52.stream.seadatacloud.cnc.kibana.KibanaController.checkOrCreateVisualization(KibanaController.java:229)
    at org.n52.stream.seadatacloud.cnc.controller.StreamController.initKibana(StreamController.java:269)
    at org.n52.stream.seadatacloud.cnc.controller.StreamController.init(StreamController.java:192)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

Restarting the container solves this issue.