I'm here to help you fix this error, bertrand-lilungh.

Having too much cache kept on the browser can cause interruption or unexpected results in QuickBooks Online. I'll share some steps for resolving common issues in the program.

Let's start by accessing your account using an incognito window. This helps fix it since this doesn't store any internet files. Here are the shortcut keys:

• Google Chrome: press Ctrl + Shift + N 
• Mozilla Firefox: press Ctrl + Shift + P
• Safari: press Command + Shift + N

Then, try extracting the Balance Sheet and Trial Balance report. If it works, return to your normal browser and clear the cache. This helped improve the system performance and removed unwanted internet data. Alternatively, you can use a different supported browser.

For your reference, you can review this material for more details: Export your reports to Excel from QuickBooks Online.

I've also included this article for a future guide on how to personalize the data display on your report: Customise reports in QuickBooks Online.

Don't hesitate to reply if you need further assistance with reports. We're always here to back you up.