dashboard: kwhperiod error -> kwhperiod_render.js?v=3 -> error: result is null

[camelcamro]

emoncms:
-> version:
Git
URL
https://github.com/emoncms/emoncms.git
Branch
* master
Describe
11.0.5-3-g122d3291

Components
Emoncms Core v11.0.7 | App v2.5.1 | Dashboard v2.2.2 | Device v2.1.7 | Graph v2.1.6 | WiFi v2.1.1 | Backup v2.3.2 | DemandShaper v2.2.2 | Postprocess v2.2.4 | Sync v2.1.3 | Emonhub v2.3.2 | EmonPi v2.9.5 | EmonScripts v1.4.1 | RFM2Pi v1.4.1

#############################

i'm using the khwperiod since around 1-2 years, without any problems, and without doing any changes in dashboard to show the daily usage of few values.
and seems to be, auto-updates are executed and upgraded or don'T know.
but, now it is not working around since 2 weeks (~2022-02-22)

i already tried to cleanup browsers and so on ...cache cleanup/reload, then tested with fresh new windows version with mozilla + chrome -> still getting this error:

error when using
EmonCMS Error

Message: TypeError: result is null
Route: Modules/dashboard/widget/kwhperiod/kwhperiod_render.js?v=3
Line: 746
Column: 34

if i look into the js file:

  // thisPeriodStartValue
  var result = feed.getvalue(feedid, thisPeriodStartTime.getTime()*0.001)
  //console.log(result, 'recent period start value')
  var thisPeriodStartValue = result[1]

[MrTimbones]

The bug is here is that feed.getvalue() returns only the value, but the line that follows treats it as an array of [time, value].

Removing [1] from line 746 fixes the error reported above, and appears to produce the current numbers for me.

[TrystanLea]

Thanks @MrTimbones that's great, I've applied the fix emoncms/dashboard@9b5756e thanks again