Hi, We have a Module that has been running on our projects for few years but we have noticed that since we updated ignition to 8.1 we receive this error. Caused by: java.lang.ClassNotFoundException: org.eclipse.milo.opcua.sdk.server.api.nodes.Node Has something changed to kick up this error?

It’s a great candidate, but I couldn’t tell you anything definitively without seeing your entire project. You may also simply have old dependencies being added inside your module that gets built as a result of not cleaning first (mvn clean).

OPC UA Node error

Module Development

pturmel February 19, 2021, 1:08pm 2

Yes. It may be as simple as recompiling your module with v8.1 dependencies. See this discussion:

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