Gateway Tag Change Event Stopped Working

Ignition
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1

Hi Everyone,

I have a project with three gateway tag change events that no longer work. I noticed when I save the project I get this error:

java.lang.IllegalArgumentException: missing event subscriber for an annotated method. Is com.inductiveautomation.ignition.gateway.script.GatewaySystemUtilities@2611d161 registered?
at com.google.common.eventbus.SubscriberRegistry.unregister(SubscriberRegistry.java:109)

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The screen is fully functional I can see the PLC tags changing but the gateway event is not triggering like it used to. These events used to work just fine. I don’t know what changed.

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1 Like
2

Post the full stack trace here as preformatted text, see Wiki - how to post code on this forum.

If possible, also post your code for the event, redacted as necessary, again as preformatted text to help others troubleshoot.

3

Exactly which Ignition version are you using, and have you restarted the gateway since the problem started happening?

You (and/or @bmeyers) should contact our support department so they can start an official investigation - there's evidently something wrong here, although apparently pretty rare.

4

I was forced to restart because the gateway event scripts weren’t firing. I am on the phone with tech support now.

5

I missed your question. We are running 8.1.35.

6 
java.lang.IllegalArgumentException: missing event subscriber for an annotated method. Is com.inductiveautomation.ignition.gateway.script.GatewaySystemUtilities@2611d161 registered?
at com.google.common.eventbus.SubscriberRegistry.unregister(SubscriberRegistry.java:109)
at com.google.common.eventbus.EventBus.unregister(EventBus.java:254)
at com.inductiveautomation.ignition.gateway.project.ProjectScriptManager.unregisterEventBus(ProjectScriptManager.java:107)
at com.inductiveautomation.ignition.gateway.project.ProjectScriptLifecycle.createScriptConfig(ProjectScriptLifecycle.java:269)
at com.inductiveautomation.ignition.gateway.project.ProjectScriptLifecycle.startupScriptConfig(ProjectScriptLifecycle.java:235)
at com.inductiveautomation.ignition.gateway.project.ProjectScriptLifecycle.restartScriptConfig(ProjectScriptLifecycle.java:231)
at com.inductiveautomation.ignition.gateway.project.ProjectScriptLifecycle.onResourcesModified(ProjectScriptLifecycle.java:733)
at com.inductiveautomation.ignition.gateway.project.ProjectLifecycle$LifecycleResourceListener.resourcesModified(ProjectLifecycle.java:176)
at com.inductiveautomation.ignition.common.project.AbstractProject.notifyResourceListeners(AbstractProject.java:351)
at com.inductiveautomation.ignition.common.project.AbstractProject.updateEffectiveState(AbstractProject.java:153)
at com.inductiveautomation.ignition.common.project.RuntimeProject.applyChange(RuntimeProject.java:274)
at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.lambda$updateOrStartAffectedProjects$5(ProjectLifecycleFactory.java:185)
at java.base/java.util.ArrayList.forEach(Unknown Source)
at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.updateOrStartAffectedProjects(ProjectLifecycleFactory.java:165)
at com.inductiveautomation.ignition.gateway.project.ProjectLifecycleFactory$1.projectUpdated(ProjectLifecycleFactory.java:143)
at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.doProjectUpdatedNotification(BaseProjectManager.java:1055)
at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.lambda$fireProjectUpdated$25(BaseProjectManager.java:1005)
at com.inductiveautomation.ignition.gateway.project.BaseProjectManager.lambda$submitToQueue$22(BaseProjectManager.java:983)
at com.inductiveautomation.ignition.common.util.ExecutionQueue$PollAndExecute.run(ExecutionQueue.java:239)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.base/java.lang.Thread.run(Unknown Source)