# Error publishing tag change event

**URL:** <https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336>\
**Category:** Ignition\
**Created:** [November 5, 2020, 8:42am UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336 "2020-11-05T08:42:38Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![ronaldny](https://avatars.discourse-cdn.com/v4/letter/r/9de053/32.png) [@ronaldny](https://forum.inductiveautomation.com/u/ronaldny)\
**Post date:** [November 5, 2020, 8:42am UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/1 "2020-11-05T08:42:38Z")

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Cant figure out where this is coming from, but it is filling up my logs

**Error publishing tag change event.**  
java.lang.ArrayIndexOutOfBoundsException: null

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**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 5, 2020, 4:11pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/2 "2020-11-05T16:11:25Z")

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What version of Ignition? Is there any more stack trace logged? Which loggers - client, designer, or gateway? Can you upload them here?

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**Author:** ![ronaldny](https://avatars.discourse-cdn.com/v4/letter/r/9de053/32.png) [@ronaldny](https://forum.inductiveautomation.com/u/ronaldny)\
**Post date:** [November 6, 2020, 1:26pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/3 "2020-11-06T13:26:32Z")

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8.0.16  
gateway log

> **[Ignition-Ignition\_logs\_20201106-1618.idb](https://drive.google.com/file/d/1JvXHVnQ33n9dFL9JHZXNdaYf6y6OFdVe/view?usp=sharing)**
>
> Google Drive file.

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<div class="post-metadata">

**Author:** ![paul-griffith](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/paul-griffith/32/37249_2.png) [@paul-griffith](https://forum.inductiveautomation.com/u/paul-griffith)\
**Post date:** [November 6, 2020, 3:42pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/4 "2020-11-06T15:42:21Z")

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Oof, there really isn’t any more information in there, huh. I’ll ask around to see if this might be something we’re already familiar with/have fixed.

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<div class="post-metadata">

**Author:** ![ronaldny](https://avatars.discourse-cdn.com/v4/letter/r/9de053/32.png) [@ronaldny](https://forum.inductiveautomation.com/u/ronaldny)\
**Post date:** [November 7, 2020, 2:35pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/5 "2020-11-07T14:35:20Z")

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Could it be having anything to do with modbus tags???

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**Author:** ![ssherwood](https://avatars.discourse-cdn.com/v4/letter/s/71e660/32.png) [@ssherwood](https://forum.inductiveautomation.com/u/ssherwood)\
**Post date:** [September 3, 2021, 3:46pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/6 "2021-09-03T15:46:07Z")

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Did anyone ever get to the bottom of this? I’m looking at what appears to be the same exact problem. The error details are not even remotely helpful.

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<div class="post-metadata">

**Author:** ![SergioS](https://avatars.discourse-cdn.com/v4/letter/s/da6949/32.png) [@SergioS](https://forum.inductiveautomation.com/u/SergioS)\
**Post date:** [March 7, 2023, 1:44pm UTC](https://forum.inductiveautomation.com/t/error-publishing-tag-change-event/40336/7 "2023-03-07T13:44:50Z")

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Good morning,  
I have same error and on log not much informations 🙂

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/1/e/1e4b4870c70292a9fe7ca76acaf79668393c21e4.png)

Someone have idea how debug this?

Thanks