OpenEMM Support

Hello Guys,
I have installed OpenEMM on my RHEL following all the steps given in the Installation manual.
When I try to add recipients to my list I see the the following error message.
An error occurred
and the following being the probable cause.
org.apache.jasper.JasperException: javax.servlet ...

Hello Guys,
I have installed OpenEMM on my RHEL following all the steps given in the Installation manual.
When I login into the application, I find " loading stopped. A general error occurred. Please check your input."
Where does this error point to? Even after two attempts of installation the same ...