Error creating bean with name 'productUpdateManager' defined in ServletContext resource [/WEB-INF/spring/mvc-config.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.danube.scrumworks.util.DefaultProductUpdateManager

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Is that the full exception chain?

Pretty much. There is a similiar one here:

Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'defaultProductUpdateProvider' defined in file [/opt/scrumworks-5.0.0/server/scrumworks/tmp/deploy/tmp3590651850701377569ScrumWorks-5.0.0.ear-contents/spring-app-exp.war/WEB-INF/classes/com/danube/scrumworks/web/controller/data/sprint/product/DefaultProductUpdateProvider.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [com.danube.scrumworks.util.ProductUpdateManager]: : Error creating bean with name 'productUpdateManager' defined in ServletContext resource [/WEB-INF/spring/mvc-config.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.danube.scrumworks.util.DefaultProductUpdateManager; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'productUpdateManager' defined in ServletContext resource [/WEB-INF/spring/mvc-config.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class com.danube.scrumworks.util.DefaultProductUpdateManager
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:730)
at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:196)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1003)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:907)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:485)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:456)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:291)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:288)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:190)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:844)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:786)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:703)
at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:795)
at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:723)
... 56 more

I ended up upgrading to 5.1 which has side stepped the problem and we are now working again.

It may have been a corrupted file in the application, so reinstalling or Upgrading was likely your best course of action. I am glad it is working for you again.

I hit the same problem... but I'm already on 5.1.0..... any suggestions? Please?