Webservlet suddenly stopped working - maven

Question

I have got a Webservlet (Dynamic Web Module 3.1), it looks like this:
package de.timetoact.cce;
import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URISyntaxException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import com.ibm.sbt.services.client.ClientServicesException;
import de.timetoact.cce.handler.ContentHandler;
import de.timetoact.cce.util.Connect;
import de.timetoact.cce.util.Util;
import de.timetoact.cce.util.Variables;
#WebServlet(urlPatterns = { "/main" }, loadOnStartup = 1)
public class InitServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException {
String actionn = request.getParameter("action").toLowerCase();
if (actionn.equals("delete")) {
System.out.println("It does work");
}
}
}
Web.xml:
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<description>The service servlet handles requests from the toolkit to access external resources.</description>
<display-name>Social Business Toolkit Service Servlet</display-name>
<servlet-name>ServiceServlet</servlet-name>
<servlet-class>com.ibm.sbt.service.core.servlet.ServiceServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>ServiceServlet</servlet-name>
<url-pattern>/service/*</url-pattern>
</servlet-mapping>
<servlet>
<description>This servlet initializes the specified JavaScript library for use by the Social Business Toolkit.</description>
<display-name>Social Business Toolkit Library Servlet</display-name>
<servlet-name>LibraryServlet</servlet-name>
<servlet-class>com.ibm.sbt.jslibrary.servlet.LibraryServlet</servlet-class>
<init-param>
<param-name>toolkitExtUrl</param-name>
<param-value>%local_server%/sbtx</param-value>
</init-param>
<init-param>
<param-name>jsLibraryUrl</param-name>
<param-value>%local_server%/sbt/js/libs</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>LibraryServlet</servlet-name>
<url-pattern>/library/*</url-pattern>
</servlet-mapping>
<filter>
<description>This filter is responsible for creating the toolkit application and context objects for every servlet within this web application.</description>
<display-name>Social Business Toolkit Filter</display-name>
<filter-name>SBTFilter</filter-name>
<filter-class>com.ibm.sbt.util.SBTFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>SBTFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>CorsFilter</filter-name>
<filter-class>org.apache.catalina.filters.CorsFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>CorsFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
Yesterday it worked perfectly, but today I get the message:
The requested resource is not available. /CCE/main
I cleaned the project and did update (Maven Update Project)
Nevertheless I got this context error, although I did not change anything.
What is wrong here?

Answer 1

This problem is caused by running two instances of your project in eclipse or tomcat. You can resolve this problem by restarting eclipse or tomcat.