Modeling: Cannot open jbpm with internal server error

[dwlee]

Symptom

Jbpm did not be opened with internal server error(error code: 500) in background running.

1. Jbpm server and drools guvnor editor was working.
2. When jbpm editor was opened in client side, any log was not printed in the forever logger.

Reason

The reasons of this issue may be problem of calling server method in meteor or jbpm rest api server is not working. However, the main reason is problem of calling server method in meteor because of symptom 2.