I hope I'm in the right place for this. I'm going from Java 6 to Java 7 and Tomcat 6 to Tomcat 8 and I'm having issues. This is a legacy product that I didn't create but have been maintaining for a while now. It works fine on Tomcat 6/Java 6 how ever there are issues with the new version. I don't see any duplicate libraries and I get the following error message when starting. The error message and web.xml are in the attachment. error and web_xml.txt