Node Red Module Not Working

Maker
1

Just updated my gateway to 8.1.25 and the Ignition Node-RED Module faulted. I tried restarting the module, restarting the gateway, and uninstalling and reinstalling the module, but nothing worked. Here's the error:

Exception while starting up module "org.imdc.nodered.IgnitionNodeRED".

java.lang.Exception: Exception while starting up module "org.imdc.nodered.IgnitionNodeRED".
	at com.inductiveautomation.ignition.gateway.modules.ModuleManagerImpl$LoadedModule.startup(ModuleManagerImpl.java:2445)
	at com.inductiveautomation.ignition.gateway.modules.ModuleManagerImpl.startup(ModuleManagerImpl.java:417)
	at com.inductiveautomation.ignition.gateway.IgnitionGateway.startupInternal(IgnitionGateway.java:1327)
	at com.inductiveautomation.ignition.gateway.redundancy.RedundancyManagerImpl.startup(RedundancyManagerImpl.java:301)
	at com.inductiveautomation.ignition.gateway.IgnitionGateway.initRedundancy(IgnitionGateway.java:751)
	at com.inductiveautomation.ignition.gateway.IgnitionGateway.lambda$initInternal$0(IgnitionGateway.java:685)
	at com.inductiveautomation.ignition.common.execution.impl.BasicExecutionEngine$ThrowableCatchingRunnable.run(BasicExecutionEngine.java:544)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown Source)
	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)
Caused by: java.lang.NoClassDefFoundError: org/eclipse/jetty/websocket/servlet/WebSocketServlet
	at java.base/java.lang.ClassLoader.defineClass1(Native Method)
	at java.base/java.lang.ClassLoader.defineClass(Unknown Source)
	at java.base/java.security.SecureClassLoader.defineClass(Unknown Source)
	at java.base/java.net.URLClassLoader.defineClass(Unknown Source)
	at java.base/java.net.URLClassLoader$1.run(Unknown Source)
	at java.base/java.net.URLClassLoader$1.run(Unknown Source)
	at java.base/java.security.AccessController.doPrivileged(Native Method)
	at java.base/java.net.URLClassLoader.findClass(Unknown Source)
	at com.inductiveautomation.ignition.gateway.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:37)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at com.inductiveautomation.ignition.gateway.modules.ModuleClassLoader.loadClass(ModuleClassLoader.java:85)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at org.imdc.nodered.GatewayHook.startup(GatewayHook.java:39)
	at com.inductiveautomation.ignition.gateway.modules.ModuleManagerImpl$LoadedModule.startup(ModuleManagerImpl.java:2439)
	... 12 more
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.websocket.servlet.WebSocketServlet
	at java.base/java.net.URLClassLoader.findClass(Unknown Source)
	at com.inductiveautomation.ignition.gateway.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:37)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	at com.inductiveautomation.ignition.gateway.modules.ModuleClassLoader.loadClass(ModuleClassLoader.java:85)
	at java.base/java.lang.ClassLoader.loadClass(Unknown Source)
	... 26 more

8.1.25 (b2023021409)
Azul Systems, Inc. 11.0.17

Module version 1.5.11

Does 8.1.25 not support this module yet?

2

It looks like this module might need to be updated with the upgrade to Jetty 10 w/ 8.1.25.

EDIT: Registered IgnitionModuleDevelopmentCommunity/Ignition-NodeRED#31, should be a pretty easy fix of mostly correcting class namespace references.

1 Like
3

Merged the PR. 1.15.12 is available here:

1 Like
4

I'm getting an interesting error that might be fixed by a more-recent version.
Currently using Ignition 8.1.31** (full install, license added for node-red) w/ latest node-red-contrib-ignition-nodes (1.5.10).
Error received is somewhat ambiguous:

"JSON error: SyntaxError: Unexpected token < in JSON at position 0"

A bit of research on the topic... here.

We have Node-RED installed as snap, so we are limited to the libraries available to the Node-RED Community catalog. I see there are new versions available on github.

@Travis.Cox: Any chance you would be able to uprev the node-red-contrib library to the latest (currently 1.5.15)?

** Edit to update Ignition version where problem is observed.

5

I should've checked the node-red snap earlier (also probably should have placed these comments in a new thread). Luckily, they exposed the packaged npm application as a command. So, updating the Ignition node module was possible with:

cd /var/snap/node-red/current/
sudo node-red.npm update node-red-contrib-ignition-nodes
sudo snap restart node-red

Unfortunately, this did not solve my issue above...
In the end, Tag Provider Read permissions were causing the error.

6

It appears NodeRED is showing the right version now, 1.5.15:

That was weird since I did that when the .15 release was out. Sorry for the confusion.