Thanks for bringing this to our attention, ronchat.

We're aware that some QuickBooks Online users are currently experiencing errors when viewing or printing invoices. Our engineers are working to fix it as soon as possible.

We’ll share updates as soon as we learn more. You may also check for updates on your end from time to time through this link: https://status.quickbooks.intuit.com/

Thank you for your understanding while we're working on a fix.