I keep getting "unexpected problem 37112" while trying to send an invoice. what am I doing wrong?

Let's get rid of the error so you can send an invoice to your customer, renee28.

There are times that the data in your browser is outdated which needs to be cleared to avoid having this error. To isolate this error, I suggest using an incognito browser to check if this is a browser-relate issue.

Once you're able to send the invoice, you can go back to the regular browser and clear the cache and cookies. Doing this will help speed up the process while working with QuickBooks.

Also, as an alternative, you can use other supported browsers to get the best out of your QuickBooks Online experience.

I've also added this link: Health Checkup tool to detect any potential issues with your browser.

Stay in touch with me on how this goes commenting below. I'm always right here to help ensure you're able to send invoices to customers.