# Chart component showing error with no apparent issue

**URL:** <https://forum.inductiveautomation.com/t/chart-component-showing-error-with-no-apparent-issue/117470>\
**Category:** Ignition\
**Tags:** ignition83, perspective\
**Created:** [October 13, 2026, 8:54pm UTC](https://forum.inductiveautomation.com/t/chart-component-showing-error-with-no-apparent-issue/117470 "2026-10-13T20:54:08Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![imt.sebastian.sanche](https://avatars.discourse-cdn.com/v4/letter/i/ecb155/32.png) [@imt.sebastian.sanche](https://forum.inductiveautomation.com/u/imt.sebastian.sanche)\
**Post date:** [October 13, 2026, 8:54pm UTC](https://forum.inductiveautomation.com/t/chart-component-showing-error-with-no-apparent-issue/117470/1 "2026-10-13T20:54:09Z")

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I have a PLC where I'm pulling the data from arrays and inserting it into a dataset one of the columns is a date but its put out as a string and Ignition will not format it correctly so I have to import `datetime`, use `datetime.strptime()` and then put it in a table, so good so far.

Now I'm trying to chart the data so I formatted the table with the following script:

```python
from datetime import datetime
column = 0
d_column = 22
x = []
series = {}

for row in value:
        y = round(row[column],2)
        z = str(row[d_column])
        series = {'Pressure' : y, 'time' : z}
        x.append(series)

```

Series look something like:

`data = [{'time': '2026-10-12 15:59:00.0', 'Pressure': 5114.77},{...},...]`

The issue is that the component is still showing Error but there is nothing that tells me what the error is, there is nothing on the Property panels. All I see is this:

 ![image](https://us1.discourse-cdn.com/inductiveautomation/original/3X/b/1/b1cc65b0696f1374b7b6a31394e59a3a02b75565.png)

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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:** [October 13, 2026, 9:03pm UTC](https://forum.inductiveautomation.com/t/chart-component-showing-error-with-no-apparent-issue/117470/2 "2026-10-13T21:03:12Z")

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Generally speaking, Ignition expects datetimes to be either Java Date objects or integer epoch milliseconds, as in something like `1791925266000`. Strings cannot be unambiguously parsed into dates without external knowledge of the exact input format.

If you're starting from a string, you can use [`system.date.parse`](https://www.docs.inductiveautomation.com/docs/8.3/appendix/scripting-functions/system-date/system-date-parse) to turn a string into a Java Date object given a known string format, and then use the `time` property or [`system.date.toMillis`](https://www.docs.inductiveautomation.com/docs/8.3/appendix/scripting-functions/system-date/system-date-toMillis) to convert to that epoch milliseconds representation.

Your script is a bit incomplete/unclear, though - what is the actual "shape" of the data you're trying to render on the chart?

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<div class="post-metadata">

**Author:** ![imt.sebastian.sanche](https://avatars.discourse-cdn.com/v4/letter/i/ecb155/32.png) [@imt.sebastian.sanche](https://forum.inductiveautomation.com/u/imt.sebastian.sanche)\
**Post date:** [October 13, 2026, 9:17pm UTC](https://forum.inductiveautomation.com/t/chart-component-showing-error-with-no-apparent-issue/117470/3 "2026-10-13T21:17:38Z")

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So I had another script to move the `tag dataset` `[100 rows, 23 cols]` to the component `table` I do this to be able to format the time. Original time is `13.10.2026 13:16` I just changed the formatting to use `system.date.parse` with no issues, when I try to bind the data directly from the `table` to the `chart` it doesn't like it so I figured I had to format it with the `list` of `dicts` as above. The only missing part of the script is the definition and the return, which is `x` at the end.

At the end I'm able to change the date to epoch in the chart but still shows same error on the faceplate.