title: Conflict between Spring MVC and JSTL on Maven Project
body: <p>I am currently looking about Spring MVC on Maven and, just for a test, I decided to try out a basic connection page. I figured out I needed JSTL, so i added it to the dependencies in my pom.xml, but every time I try to restart my Tomcat server after this I get this error :</p>
  
  <pre><code>Could not delete D:/IDE/java-neon/workspace/.metadata/.plugins/org.eclipse.wst.server.core/tmp1/wtpwebapps/HelloWeb/WEB-INF/lib. May be locked by another process.
  </code></pre>
  
  <p>Does anyone know what should I do for this please ?</p>