Apache Tomcat 7 The Requested Resource Is Not Available

Question

Newbie to Tomcat 7 and everything here so apologies if this is a simple error. I've looked through other questions and answers asking the same thing and nothing seems to pertain to my issue. I've updated Tomcat 5.5 to Tomcat 7. When accessing http://localhost:80 I see the Tomcat 7 page perfectly fine so I'm guessing it's something in the URL that's being accessed.

I've installed Tomcat 7 and am trying to navigate to the URL http://localhost/otcs/cs but I keep getting the Request Resource is not available error. Below is my server.xml file.

java.lang.NullPointerException
    java.lang.String.getBytes(Unknown Source)
    com.opentext.servlet.client.LLServletClient.sendErrorPage(LLServletClient.java:249)
    com.opentext.servlet.client.LLServletClient.sendErrorPage(LLServletClient.java:208)
    com.opentext.servlet.client.LLServletClient.doGet(LLServletClient.java:122)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:620)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:727)
    com.opentext.servlet.filter.CompressionFilter.doFilter(CompressionFilter.java:446)

Thanks for the help and I'm happy to give more information if needed.