2475680 - Unable to load JSP or Jasper exception while playing the course in Authoring Tool.

While you launch a content in the SAP Authoring Environment (LSOAE). The following error occurs:

HTTP Status 500  
type Exception report 
message description The server encountered an internal error () that prevented it from fulfilling this request. 
exception javax.servlet.ServletException: Unable to load class for JSP

•Human Capital Management (HCM)
•SAP Learning Solution 6.0
•SAP Authoring Environment version LSO 604_14

javax.servlet.ServletException: Unable to load class for JSP, HTTP Status 500, Authoring Environment, LSO-AE, LSO, Content Player , KBA , PE-LSO-AE , Authoring Environment , PE-LSO-CP , Content Player , Problem