title: Error on running tomcat server in Eclipse
body: <p>I am so new in Java and I have cloned one project from Gitlab and imported it into Eclipse.</p>
  
  <p>I also added tomcat server and also set properties for project as well as for tomcat server.</p>
  
  <p>I have currently 2 projects added in Eclipse and one is working fine but another is failing. I have changed ports for server of another project.</p>
  
  <p>It looks like some files are missing?</p>
  
  <p>I have gone through many answers here but none helped.</p>
  
  <p>But upon running second project, I am getting below errors:</p>
  
  <pre><code>INFO: Initializing ProtocolHandler ["ajp-bio-8009"]
  Nov 15, 2016 7:41:27 AM org.apache.catalina.startup.Catalina load
  INFO: Initialization processed in 411 ms
  Nov 15, 2016 7:41:27 AM org.apache.catalina.core.StandardService startInternal
  INFO: Starting service Catalina
  Nov 15, 2016 7:41:27 AM org.apache.catalina.core.StandardEngine startInternal
  INFO: Starting Servlet Engine: Apache Tomcat/7.0.72
  Nov 15, 2016 7:41:27 AM org.apache.catalina.core.ContainerBase startInternal
  SEVERE: A child container failed during start
  java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ProductEngine]]
      at java.util.concurrent.FutureTask.report(FutureTask.java:122)
      at java.util.concurrent.FutureTask.get(FutureTask.java:192)
      at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1119)
      at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:819)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
      at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1571)
      at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1561)
      at java.util.concurrent.FutureTask.run(FutureTask.java:266)
      at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
      at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
      at java.lang.Thread.run(Thread.java:745)
  Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/ProductEngine]]
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:162)
      ... 6 more
  Caused by: java.lang.NoClassDefFoundError: Lorg/apache/commons/logging/Log;
      at java.lang.Class.getDeclaredFields0(Native Method)
      at java.lang.Class.privateGetDeclaredFields(Class.java:2583)
      at java.lang.Class.getDeclaredFields(Class.java:1916)
      at org.apache.catalina.util.Introspection.getDeclaredFields(Introspection.java:106)
      at org.apache.catalina.startup.WebAnnotationSet.loadFieldsAnnotation(WebAnnotationSet.java:270)
      at org.apache.catalina.startup.WebAnnotationSet.loadApplicationListenerAnnotations(WebAnnotationSet.java:89)
      at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:63)
      at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:417)
      at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:891)
      at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:388)
      at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
      at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
      at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5522)
      at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
      ... 6 more
  Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.Log
      at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
      at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
      ... 20 more
  </code></pre>
  
  <p>Update: my pom.xml is as below and it does not have provided state</p>
  
  <p><a href="https://i.stack.imgur.com/RVLZ0.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/RVLZ0.png" alt="enter image description here"></a></p>