title: On every 'save' in Eclipse: org.eclipse.emf.ecore.xmi.FeatureNotFoundException
body: <p>In my Eclipse Oxygen, I get this error on every save.</p>
  
  <p>From reading around, it seems to come from some version incompatibility in the Servlet standard used but I am not sure what is incompatible with what.</p>
  
  <p>How do I fix this?  </p>
  
  <blockquote>
    <p>An internal error occurred during: "Loading descriptor for project1.". org.eclipse.emf.ecore.xmi.FeatureNotFoundException:
     Feature 'init-param' not found. (platform:/resource/project1/war/WEB-INF/web.xml, 72, 14)</p>
  </blockquote>