# Data trending error executing script

**URL:** <https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046>\
**Category:** Ignition\
**Created:** [February 18, 2026, 10:30pm UTC](https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046 "2026-02-18T22:30:37Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![bkpunt](https://avatars.discourse-cdn.com/v4/letter/b/258eb7/32.png) [@bkpunt](https://forum.inductiveautomation.com/u/bkpunt)\
**Post date:** [February 18, 2026, 10:30pm UTC](https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046/1 "2026-02-18T22:30:37Z")

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Hi all, first time poster and new to ignition here. I am currently looking into trending data from a flowmeter on ignition. The tag value (in gpm) changes whenever valve is ON/OFF. However, I am getting this alarm whenever I try to trend the data from the past couple of days, weeks, and so on. Any idea on what’s causing this and how to remedy? We already have data from other meters working and trending, this is the only exception for some reason and has been so for a couple of years now. Attached are images. Any input is appreciated.

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/2/1/2136744d1577a84b3f9dcc3a3936249297da67fc.png)

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/5/b/5bfc3b82dd5989cfda9e74250e6fc3f30594f275.png)

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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:** [February 18, 2026, 10:58pm UTC](https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046/2 "2026-02-18T22:58:03Z")

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You'll have to provide your custom function `configChart` for us to have any idea.

To clarify: This is some custom Python code someone added to your project at some point throwing an exception.

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**Author:** ![bkpunt](https://avatars.discourse-cdn.com/v4/letter/b/258eb7/32.png) [@bkpunt](https://forum.inductiveautomation.com/u/bkpunt)\
**Post date:** [February 19, 2026, 5:09am UTC](https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046/3 "2026-02-19T05:09:14Z")

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Any idea where these type of charts are stored/located?

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [February 19, 2026, 1:24pm UTC](https://forum.inductiveautomation.com/t/data-trending-error-executing-script/114046/4 "2026-02-19T13:24:20Z")

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They are part of the UI window in the project.

(You really need to take the free courses in Inductive University--that will short-circuit many of your questions.)