Followed all the instructions for setting up open mrs (for development). It started fine. However, as soon as I installed legacy UI module, I started getting following exception while starting jetty server -
java.lang.IllegalStateException: java.lang.NullPointerException
at org.eclipse.jetty.servlet.ServletContextHandler$Context.addListener(ServletContextHandler.java:1422)
at org.openmrs.web.WebComponentRegistrar.setServletContext(WebComponentRegistrar.java:49)
at org.springframework.web.context.support.ServletContextAwareProcessor.postProcessBeforeInitialization(ServletContextAwareProcessor.java:108)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:416)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1788)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:595)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:517)
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:323)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:321)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:879)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:878)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:550)
at org.openmrs.module.ModuleUtil.refreshApplicationContext(ModuleUtil.java:888)
at org.openmrs.module.web.WebModuleUtil.refreshWAC(WebModuleUtil.java:847)
at org.openmrs.web.Listener.performWebStartOfModules(Listener.java:632)
at org.openmrs.web.Listener.performWebStartOfModules(Listener.java:612)
at org.openmrs.web.Listener.startOpenmrs(Listener.java:251)
at org.openmrs.web.WebDaemon$1.run(WebDaemon.java:42)
Caused by: java.lang.NullPointerException
at org.eclipse.jetty.servlet.ListenerHolder.doStart(ListenerHolder.java:81)
at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72)
at org.eclipse.jetty.servlet.ServletContextHandler$Context.addListener(ServletContextHandler.java:1418)
... 19 more
Although I was able to access it, after-login-page was displaying following error :-
Registration core module is not loaded.