Cannot create a session after the response has been committed

Question

Opening the JSF page gives me the following exception:

Caused by: java.lang.IllegalStateException: Cannot create a session after the response has been

Answer 1

I put this in my web.xml to solve the problem for one of my apps.

    javax.faces.STATE_SAVING_METHOD
    client

What is weird though is that I have several other applications hosted on this same glass fish instance that doesn't require this voodoo in the web.xml.

I strongly want to believe this is not the solution, cos it doesn't make any sense to me why this particular app requires it and the others didn't. But for now it works.