javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:216) at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:544)
A continuous and erratic error you would see on the console of this title might come across your JSF development once in a while.
Also you may see the browser is taking long while this error happens.
It has to do with navigation in the faces-config.xml file. in my case, I had forgotten to add the forward slash in front of my file – that is
<navigation-case> <from-outcome>hint</from-outcome> <to-view-id>/index.jsp</to-view-id> </navigation-case>
The above is snippet from the faces-config.xml file. As you can see, the index.jsp file is without the forward slash – That was the problem