https://community.appian.com/discussions/f/general/11143/unable-to-use-jsp-pagesHi All, I upgraded servers from 7.6 to 17.2, in 7.6 there are some JSP pages which were working properly, but when upgraded to 17.2 they are not working properly. By looking at error, I thought it was issue with &quot;tmp&quot; directory present in JBOSS, buten-USTelligent Community 12https://community.appian.com/thread/48926?ContentTypeID=1Wed, 27 Sep 2017 23:38:07 GMTd3a83456-d57b-489c-a84c-4e8267bb592a:76435e42-ecb1-4b6f-85d8-46089441e9faTristan NewmannThe JSP compiler will usually print this error if the class that you are trying to reference isn&#39;t on the classpath. I would review release notes and the API documentation for 17.2 to ensure that the class that you are trying to reference is still exposed by the API and hasn&#39;t been removed.<div style="clear:both;"></div>