Step 1: I'm developing a servlet that gets triggered by a webhook. Running the JIRA plugin in the fast-dev environment on my local machine is fine, all works.

Step 2: When deploying the jar file as a plugin to a production server I get the following error "2013-12-11 17:34:35,693 httpclient-callbacks:thread-2 WARN anonymous [atlassian.webhooks.plugin.PublishTaskFactoryImpl$PublishTaskImpl] Server error - 500 when posting to web hook at 'http://localhost:8081/plugins/servlet/vinnustund?issue=DEMO-27&action=%27insert%27&user_id=vilhjalmurh'"

Step 3: I installed another standalone JIRA instance on my local machine and repeated the deployment in step 2 and I get the same error. ergo The plugin only runs in the fast-dev environment.

Does anyone have any ideas why this is?