Ui-chart fails to update specific to ui-page and ui-group

General
1

My three ui-charts (bar chart) on a specific ui-group and ui-page showed up one morning with one bar in the far left x-axis. Debug is fine, its getting the proper message. I cleared history then i saw nothing while debug says its updating. I changed the type from bar to line and now it works again. I have had the charts running about 3 weeks. This probably is only on the one ui-group and ui-page. my ui-text field in this group/page, work fine.

Not sure what happened, but i'm assuming i reset the code when i changed from bar to line to bar again? version 4.0.2 running on linux on aws, flowfuse, 1.14.0 - updating to 1.18.0

2

Yeah, we try to keep data and transfer it over automatically, but sometimes we just can't do it, so have to clear the chart.

5

Joe,
the chart seems to stop providing 'y' values, yet the time 'x' is registered, I'm sending {"x":"10/19 5:31 AM","y":33}, works great but it stalled one morning and only one 'y' value is shown. Clearing node-red and uploading my backup is the only way i see to fix this.

6

Is this now a reccuring/reproducable problem for you?

7

i am trying it on my ubuntu/snap and will likely wipe out my AWS production site and upload my backup. only the three charts in the 'density' ui-group and ui-page, the other ones are fine.

answers to your questions: first time, Reproducable? I am going to try other things like a new group and page, remove disabled and unused nodes, all ready tried two platforms, both Ubuntu however. So stay tuned unless you have something i can try.

8

When you say you've tried two Ubuntu systems, does that mean you were able to reproduce the problem?

9

Joe,
Trying to isolate the problem and below has been reproducible: I have exported what worked and imported both so they are identical.

node red version, snap on laptop is 3.1.0, flowfuse 1.14, Ubuntu 22.04.5 LTS - works fine for the past several hours

node red version, npm -g -list, 4.0.2, flowfuse 1.18 on AWS micro Ubuntu 24.04.1 LTS - the dashboard pages update, but only the text values, not the chart. the chart is throwing some errors:

10/20/2024, 9:31:08 AMnode: PIR 359 Delta Count Barmsg : error

i have many ui-charts running, but these are unique to a ui-group and ui-page, but more importantly, they are the only ones using two key:values, x and y.

"Error: Invalid property expression: zero-length"
10/20/2024, 9:51:02 AMnode: PIR 365 Delta Count Barmsg : error
"Error: Invalid property expression: zero-length"
10/20/2024, 9:51:02 AMnode: debug 25msg.payload : Object
{ x: "10/20 9:51 AM", y: 6652 }
10/20/2024, 9:51:02 AMnode: debug 26
msg.payload : number 6652 - the text box works, number is updating

10

Okay, that's a concern. I have seen that error before, and thoight I'd put a fix in. I can't get to a laptop today as I need to look after my kids, but will look firet thing tomorrow.

Thanks so much for investigating further.

11

let me know if you want my user/pass on the engine. enjoy your family day!

12

Hello Joe,
I created another node-red instance on a RPI-4, doing well. I also cleaned up my function's JavaScript as it appears my initial very large value came back after about 3 days. With the cleaned code, I uploaded to AWS, and i still get the same error.