MATLAB Web App does not load when it comes to hosting

Hi,

I have truoble loading my web app on my web app homepage.

Other open-source web app example (mortgage calculator) does work well on the web app server,

but the one that I made on web app homepage does not finish loading, after I clicked on homepage.

Does anyone know some possible causes of this infinite loading error?

Thank you for reading.

[Kojiro Saito]

You can check the log from "Show Log" button in the left bottom.

[SungMoon Lee]

Thank you.

But I cannot access to that "Show Log" button as the page is stuck loading the program.

No button is functioning while loading the web app.

So I have attached web app log from log folder.

I would appreciate if any of you could tell which could have gone possibly wrong.

[Kojiro Saito]

I've found "W ProxyID NOT found" error in webapps_20230502_000.txt. But it doesn't seem to be server side problme but not app specific and it doesn't explain why mortgage app works while your app not.

Are you using R2023a without update?

Because R2023a first release contains the following bug,

MATLAB graphics objects, such as axes, plots, and lines, do not render in MATLAB Web App Server (2957430)

so updating MATLAB Runtime and MATLAB to Update1 will solve if this is the cause of your issue.

[SungMoon Lee]

Thank you for the reply!

I updated my MATLAB to R2023a ver. as you suggested, but the loading problem is not solved yet.

I guess there's might be a trouble making component in my app, so I gotta do some test about it.

[SungMoon Lee]

I just found out that the app works well on server when I excluded the 'Tree Checkbox' material.

It's strange as the tree checkbox option is an elemantal component of app designer.

Answer 1

[SungMoon Lee]

I just found out that the app works well on server when I excluded the 'Tree Checkbox' material.

It's strange as the tree checkbox option is an elemantal component of app designer.

[Eric Delgado]

Hey @SungMoon Lee, it sounds like a Matlab WebServer bug! Have you reported it to Mathworks? I noticed this bug as well, and my approach was to incorporate a uihtml object into the app. Through this object, I remove the WebServer's progress dialog.

window.parent.parent.document.getElementsByClassName("mw-busyIndicator")[0].remove();