Error Message "An embedded page @qbo.onlinepayroll.intuit.com says error in extras bootstrap [TypeError: cannont read property 'child' of undefined] How do I fix this?

Hello there, @lindak1119.

Thanks for reaching out to us. Let's get this sorted out to keep your QuickBooks Online (QBO) running and so you can get back to your business.

This error usually occurs when the system is delay. To resolve this, you'll need to process troubleshooting steps. If you're using the QBO Desktop app, you can reset the Windows app. 

Here's how:

1. Click Help.
2. Select Reset App Data. 

For the Mac app:

1. Hold Fn + Option + Shift on your keyboard.
2. Double-click on the QBO Mac App.
3. Click the Reset button.

If the issue persists, I suggest clearing your browser's cache or use a different browser. 

You may also contact our QuickBooks Online Support Team if you need further assistance. They have additional tools to do a remote session and walk you through the steps. 

Here's how you can contact our phone support:

1. Go to: Get help with QuickBooks Online.
2. Click the contact us link. 
3. Select the Search for something else, and type-in Customer Support. 
4. Click Search.
5. Scroll-down and click Get Phone Number. 

That should do it! Please know that I'm just a post away if you nave any other concerns. Have a good one.