# \[IGN-6443\] changeNotification logger is spamming Gateway logs

**URL:** <https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082>\
**Category:** Ignition\
**Created:** [December 29, 2022, 11:04pm UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082 "2022-12-29T23:04:46Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![Fadhil\_Semi](https://avatars.discourse-cdn.com/v4/letter/f/f19dbf/32.png) [@Fadhil\_Semi](https://forum.inductiveautomation.com/u/Fadhil_Semi)\
**Post date:** [December 29, 2022, 11:04pm UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/1 "2022-12-29T23:04:46Z")

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```auto
java.lang.NullPointerException: null

```

Flooded with this error in the logs. No sure what is the issue here. Help?

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**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\
**Post date:** [December 29, 2022, 11:10pm UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/2 "2022-12-29T23:10:15Z")

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Without more insight into what is logging the error we won't be able to help you. Which logger is logging this? Is there any magnifying glass or `+` icon at the right side of the logged exception? What do you see when you expand it?

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<div class="post-metadata">

**Author:** ![Fadhil\_Semi](https://avatars.discourse-cdn.com/v4/letter/f/f19dbf/32.png) [@Fadhil\_Semi](https://forum.inductiveautomation.com/u/Fadhil_Semi)\
**Post date:** [December 29, 2022, 11:35pm UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/3 "2022-12-29T23:35:43Z")

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![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/0/f/0f7fc1bb52ba3d3654af2e9a4399c4f751269594.png)

Hi Thanks  
Its logging from the Diagnostic logs.

Logger: changeNotification  
Message: Error notifying tag structure change.  
And when I expanded the Error: it gives me "java.lang.NullPointerException: null"

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<div class="post-metadata">

**Author:** ![cmallonee](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/cmallonee/32/6416_2.png) [@cmallonee](https://forum.inductiveautomation.com/u/cmallonee)\
**Post date:** [December 30, 2022, 12:13am UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/4 "2022-12-30T00:13:33Z")

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Ah, this is a known issue, introduced sometime between 8.1.13 and 8.1.18. We have an open ticket to identify the cause and fix it, but work has not yet started.

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<div class="post-metadata">

**Author:** ![Fadhil\_Semi](https://avatars.discourse-cdn.com/v4/letter/f/f19dbf/32.png) [@Fadhil\_Semi](https://forum.inductiveautomation.com/u/Fadhil_Semi)\
**Post date:** [December 30, 2022, 12:32am UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/5 "2022-12-30T00:32:14Z")

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Ah cool. I wonder if restarting he gateway is going to resolve this (well at least for temporary) ?  
I could test it, but too risky to restart the gw now as it is a production server, need to find a good time to do it

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<div class="post-metadata">

**Author:** ![Fadhil\_Semi](https://avatars.discourse-cdn.com/v4/letter/f/f19dbf/32.png) [@Fadhil\_Semi](https://forum.inductiveautomation.com/u/Fadhil_Semi)\
**Post date:** [December 30, 2022, 2:27am UTC](https://forum.inductiveautomation.com/t/ign-6443-changenotification-logger-is-spamming-gateway-logs/68082/6 "2022-12-30T02:27:52Z")

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I dont know if this is going to be helpful or not.  
but my deleted UDT folder called as "RA\_SLC" is still showing on the selection to create a new tag.  
100% sure that UDT folder "RA\_SLC" is deleted and not showin on the UDT definitions tree anymore.

This could be the reason for the error log?

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/1/116b9c5df5a518ab62a8160f8e6d7c232ceb138c.png)