Unanswered question

Hi,
I am trying to perform load testing on Oracle forms and below are the errors facing, Please let me know the reasons

1. ERROR - neoload.plugins: The Java sessionID of the request seems to be NULL or EMPTY java.util.NoSuchElementException
at java.util.StringTokenizer.nextToken(Unknown Source)

2. ERROR - neoload.Engine: Cannot send Oracle Forms dialog message : Key negociation has failed com.neotys.nl.conversion.plugin.g.a.f: Critical error: encryption key negociation with server failed

3. ERROR - neoload.Engine: Critical Oracle Forms exception occurred during Oracle Forms response decryption com.neotys.nl.conversion.plugin.g.a.e: The Oracle Forms server has sent an error: ifError:7/500