Glassfish service throws an error

I have successfully installed a Glassfish service that runs on my server.

When I try to access the application, I get an HTTP 500 error :

org.apache.jasper.JasperException: PWC6345: There is an error in invoking javac. A full JDK (not just JRE) is required

When I launch NetBeans and Glassfish, it starts automatically (I assume it finds the sevice that is already running) and I can launch my application without problems.

Have you ever encountered this problem ? I can't seem to find a solution.