How to find userCodeAppPanel?

Question

Google Apps Script

Hello.
When I click on the button in the sidebar, an error pops up.

Uncaught TypeError: Cannot read property 'style' of null
    at HTMLButtonElement.model (userCodeAppPanel:7)
model @ userCodeAppPanel:7

How to find this userCodeAppPanel to see why the error. And how to get rid of this error?

Answer 1

Since a long time ago, the browser console incorrectly shows errors in Google web applications.
userCodeAppPanel is a standard google script that it puts in your web application.
And that's where your code is.
The conclusion is simple.
Look for an error in your code.
And to make it easier to find it, use try catch
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Maxim Stoyanov (stomaks), Google Apps Script developer .
g-apps-script.com
stomaks.me