nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

HELP! Error Message "Cannot read properties of undefined (reading 'type')"

OLIVIALUNSFORD

Help! I have been working on this for the last week and I went to complete my home page for the experience today and this happened. I now can't see my pages in the Contents pane, and I can't edit this one with the Contents Pane editor options. I'm freaking out... what do I do? I have a presentation next Wednesday and was hoping to showcase this.

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Accepted answers

TonghuiMing

Hello @OLIVIALUNSFORD -

After checking, the widget causing the problem has been identified, but we are not sure what configurations had been done prior to this - it is quite weird and probably needs certain specific pre-steps.

The good news is - there is a way for you to resolve this issue on your end.

1. In the builder canvas, select 'Card 2', and then delete it:

2. Save the app and then refresh the browser. It should look fine now.

All you have to do now is to add another Card widget as a replacement and continue building the app.

Thank you,

Tonghui

All comments

GrantHoward1

is there an ArcGIS Idea for this fix?
Or is this fix at least on the roadmap for ESRI?
It's very inconvenient and time consuming to have to rebuilt an entire widget from scratch every time you want to make a small enhancement to it.

elpinguino

Hello, I've also run into the same problem with the table widget using a view layer.

I deleted the table widget and put it back in. That fixed it. I had already configured/customised two other tabs in the table already which wasn't quick, so if there's a way for this bug to get ironed out that would be great.

Really appreciate the upgrades you guys have made so far in Experience Builder. It's come a long way since I started using it 2-3 years ago!

MariaAngelicaPrieto

Hi! I have the same issue. How do you know which widget is causing the problem?

OLIVIALUNSFORD

Sorry - give it a try now.

TonghuiMing

I cannot access it unfortunately

OLIVIALUNSFORD

Here is the experience. I was working on the "Need To Know" Page when this happened. I was going to implement hover cards with descriptions for project phases that the user will see on the second page.

But I literally can't even access the Pages section of ExB to delete or add Pages anymore. I was going to delete this one and just start over because of the error, but there's no way to back track.

https://experience.arcgis.com/experience/c0c1005cec73457196d5c2b665d134f6/page/Need-to-Know/?draft=true

TonghuiMing

Is it possible to share your app in some way for us to take a look?

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