Blank white window when launching a web app

Hi everyone,

I complied a Matlab Web App with R2021b on Linux. I previously developed the web app with an older version (R2020b).

As soon as I start the app and it has loaded, I only see a blank white window. After some seconds the log contains the following message: "The session log could not be read." After a few minutes an error dialog box appears with the message: "Something went wrong. Click OK or refresh the page to restart the app " I tried it several times, but the whole repeats.

Attatched you can find a screenshot with error message.

Does anyone have an idea where the error comes from?

Answer 1

[Mohammad Khair]

I have the same issue, any resolution for this issue ???

Mohammad

[Christian Idzik]

In my case, an error occurred during the startupfcn.

The error was caused by a function which I called during the startup function.

Maybe you can check if you have similiar problems