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null at org.apache.myfaces.webapp.Jsp21FacesInitializer.initContainerIntegration(Jsp21FacesInitializer.java:62) ~[myfaces-bundle-2.2.10.jar!/:2.2.10]
java.lang.NullPointerException: null at org.apache.myfaces.webapp.Jsp21FacesInitializer.initContainerIntegration(Jsp21FacesInitializer.java:62) ~[myfaces-bundle-2.2.10.jar!/:2.2.10]	at org.apache.myfaces.webapp.AbstractFacesInitializer.initFaces(AbstractFacesInitializer.java:172)	at org.apache.myfaces.webapp.StartupServletContextListener.contextInitialized(StartupServletContextListener.java:121)	at io.undertow.servlet.core.ApplicationListeners.contextInitialized(ApplicationListeners.java:187)	at io.undertow.servlet.core.DeploymentManagerImpl.deploy(DeploymentManagerImpl.java:198)	at org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory.createDeploymentManager(UndertowEmbeddedServletContainerFactory.java:390)	at org.springframework.boot.context.embedded.undertow.UndertowEmbeddedServletContainerFactory.getEmbeddedServletContainer(UndertowEmbeddedServletContainerFactory.java:224)	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.createEmbeddedServletContainer(EmbeddedWebApplicationContext.java:164)	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.onRefresh(EmbeddedWebApplicationContext.java:134)	at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:535)	at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122)	at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)	at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:369)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:313)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1185)	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1174)	at org.joinfaces.example.JoinFacesExampleApplication.main(JoinFacesExampleApplication.java:10)	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)	at java.lang.reflect.Method.invoke(Method.java:498)	at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:48)	at org.springframework.boot.loader.Launcher.launch(Launcher.java:87)	at org.springframework.boot.loader.Launcher.launch(Launcher.java:50)	at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:58)