Does anyone have a fix for duplicate emails being sent to customers when sending them an invoice? I haven't done anything than I normally do and it just started doing it.

I haven't changed settings in months and this duplication started happening out of nowhere. Although I'm not sure if it's related to another issue I had that Quickbooks just resolved. The issue I had prior was that I couldn't duplicate invoices to start a new one with the customer's same info already pre-submitted, but they fixed that and now this new issue is occurring.