Erro spring MVC

Bom dia amigos.
Estou trabalhando em um projeto fortemente baseado em spring framework o qual estou começando meus estudos agora mas já enfrento varias situações no meu trabalho atual. O problema é o seguinte ao executar minha aplicação no tomcat o seguinte erro é gerados.

GRAVE: Exception sending context initialized event to listener instance of class [org.springframework.web.context.ContextLoaderListener]

java.lang.NoClassDefFoundError: br/com/empresa/biblioteca/model/pojo/Camera

at java.base/java.lang.Class.getDeclaredMethods0(Native Method)

at java.base/java.lang.Class.privateGetDeclaredMethods(Class.java:3166)

at java.base/java.lang.Class.getDeclaredMethods(Class.java:2309)

at org.springframework.util.ReflectionUtils.getDeclaredMethods(ReflectionUtils.java:612)

at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:524)

at org.springframework.util.ReflectionUtils.doWithMethods(ReflectionUtils.java:510)

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.determineCandidateConstructors(AutowiredAnnotationBeanPostProcessor.java:241)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineConstructorsFromBeanPostProcessors(AbstractAutowireCapableBeanFactory.java:1069)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1042)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510)

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)

at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)

at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)

at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)

at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)

at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772)

at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839)

at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538)

at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:444)

at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:326)

at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:107)

at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4768)

at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5236)

at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1423)

at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1413)

at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)

at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)

at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)

at java.base/java.lang.Thread.run(Thread.java:834)

Caused by: java.lang.ClassNotFoundException: br.com.criarenet.wifilibrary.model.pojo.Camera

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1364)

at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1185)

… 30 more

Pelo que eu entendi, estou sendo informado que a classe “: br/com/empresa/biblioteca/model/pojo/Camera” não existe. mas ela existe e o erro começou depois que eu a criei. Alguém poderia me ajudar. Já googuei dois dias mas não achei a solução.

Vlw galera.