# Diagnostics Logs - OPC UA Error

**URL:** <https://forum.inductiveautomation.com/t/diagnostics-logs-opc-ua-error/37887>\
**Category:** Ignition\
**Created:** [August 18, 2020, 9:28pm UTC](https://forum.inductiveautomation.com/t/diagnostics-logs-opc-ua-error/37887 "2020-08-18T21:28:45Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![JessicaG](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jessicag/32/13193_2.png) [@JessicaG](https://forum.inductiveautomation.com/u/JessicaG)\
**Post date:** [August 18, 2020, 9:28pm UTC](https://forum.inductiveautomation.com/t/diagnostics-logs-opc-ua-error/37887/1 "2020-08-18T21:28:45Z")

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I am having the following error in the Diagnostics Logs, did not have the problem when i was working in windows, when i changed to ubuntu it came out:

at com.inductiveautomation.ignition.gateway.opcua.server.DeviceManagerNamespace$DeviceAddressSpace.write(DeviceManagerNamespace.kt:377)  
at org.eclipse.milo.opcua.sdk.server.api.AddressSpaceComposite.lambda$null$20(AddressSpaceComposite.java:365)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.lambda$groupMapCollate$3(GroupMapCollate.java:47)  
at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)  
at java.base/java.util.HashMap$EntrySpliterator.forEachRemaining(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(Unknown Source)  
at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.allOf(GroupMapCollate.java:77)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.groupMapCollate(GroupMapCollate.java:68)  
at org.eclipse.milo.opcua.sdk.server.api.AddressSpaceComposite.write(AddressSpaceComposite.java:351)  
at org.eclipse.milo.opcua.sdk.server.api.AddressSpaceComposite.lambda$null$20(AddressSpaceComposite.java:365)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.lambda$groupMapCollate$3(GroupMapCollate.java:47)  
at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown Source)  
at java.base/java.util.HashMap$EntrySpliterator.forEachRemaining(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown Source)  
at java.base/java.util.stream.AbstractPipeline.evaluateToArrayNode(Unknown Source)  
at java.base/java.util.stream.ReferencePipeline.toArray(Unknown Source)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.allOf(GroupMapCollate.java:77)  
at org.eclipse.milo.opcua.sdk.server.util.GroupMapCollate.groupMapCollate(GroupMapCollate.java:68)  
at org.eclipse.milo.opcua.sdk.server.api.AddressSpaceComposite.write(AddressSpaceComposite.java:351)  
at org.eclipse.milo.opcua.sdk.server.services.DefaultAttributeServiceSet.onWrite(DefaultAttributeServiceSet.java:121)  
at org.eclipse.milo.opcua.sdk.server.SessionManager.onWrite(SessionManager.java:797)  
at org.eclipse.milo.opcua.stack.server.UaStackServer.handleServiceRequest(UaStackServer.java:312)  
at org.eclipse.milo.opcua.stack.server.UaStackServer.lambda$onServiceRequest$10(UaStackServer.java:275)  
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)  
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)  
at java.base/java.lang.Thread.run(Unknown Source)

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<div class="post-metadata">

**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [August 19, 2020, 12:04pm UTC](https://forum.inductiveautomation.com/t/diagnostics-logs-opc-ua-error/37887/2 "2020-08-19T12:04:17Z")

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It looks like this stack trace was cut off early.

Can you attach the full log file?