I am running this on a Raspberry Pi 4 Model B Rev 1.1 Node-Red: 1.2.6 Node-red-dashboard: 2.25.0 Dashboard installed with: npm install node-red-dashboard Chart is empty in UI but numeric and gauge works. [node-red] The following is my flow: [{"id":"5891993e.ce2298","type":"ui_chart","z":"cda…

2.26.0: Milestone Release has fix for the situation. So do update the dashboard and do not forget to flush browser cache after updating.

Works for me [image] [{"id":"2fc607c3.337dd8","type":"ui_chart","z":"64ce1d00.d049e4","name":"","group":"2fda441c.bc393c","order":1,"width":0,"height":0,"label":"chart","chartType":"line","legend":"false","xformat":"HH:mm:ss","interpolate":"linear","nodata":"","dot":false,"ymin":"","ymax":"","rem…

Okay, thank you. I have cleared cache and tried both Chromium and Firefox, both with the same result.

Have you tried my flow? Does that work? Are there any errors in the browser console? Use a debug to see what values are being sent to the chart - are they numbers? strings?

Thank you, your flow gave the same result. But the console showed: TypeError: Cannot read property 'themeState' of undefined I will update once I have searched some more.

I tried to follow: https://discourse.nodered.org/t/app-min-js-148-typeerror-cannot-read-property-themestate-of-undefined/28343/2?u=henrikjo Which indicates that there is a bug in app.min.js Tried the following but without success: cd Downloads wget share/app.min.js at master · martinLim45/shar…

On another thread with this issue, the reply said something like... Delete your flows (start from fresh node-red / blank) (to do this just rename the flow files in .node-red & restart node-red) Add a standard node-red-dashboard item (like ui_button) - test. If ok, add the ui_chart, deploy & check …

I have managed to replicate a similar error by importing the flow into an empty flows file, so have submitted an issue. It is not quite the same error message though. Chart not updating and theme undefined in console opened 05:35PM - 14 D…

Added one more repro case for issue.

Fix proposal: The root cause: If ui_base is not created yet and chart initializes, the loadConfiguration method asks for item.theme.themeState but item.theme is not initialized yet. function loadConfiguration(type,scope) { //console.log("LOAD CONFIG",type,scope); var config = scope.confi…

Thank you both @hotNipi and @Steve-Mcl ! I think @Steve-Mcl tried to tell me this in a previous comment, but I believe I missed a step. It clicked when I read the comment in: Chart not updating and theme undefined in console opened 05:35P…

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Dashboard empty in UI

Dashboard

Steve-Mcl 15 December 2020 10:35 20

This happened to me on a working system after simply updating dashboard & restarting node-red. So there are more vectors at play.

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Dashboard empty in UI

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