To prevent this error when migrating data from QuickBooks Desktop to the Online version, I recommend exporting your company file as a backup QBB file to your PC, @FischerEnt.
From there, go to initial setup and upload the QBB file from your PC to the cloud folder using the web-based migration tool to migrate it to QBO. This option is reliable when you have QuickBooks Desktop 2021 or an older version. Please follow Step 3 from this article: Move your QuickBooks Desktop file to QuickBooks Online.
When you're ready, click the Schedule Now button in this article to book a personalized setup call with a QuickBooks Online expert: Move from QuickBooks Desktop to QuickBooks Online Resource Center.
Explore our QuickBooks Live Expert Assisted service to simplify your bookkeeping and enhance your QuickBooks experience. With personalized guidance tailored to your business needs, our dedicated professionals will help you navigate QuickBooks with confidence.
You're always welcome to return for assistance with migrating QuickBooks Desktop to QuickBooks Online or setting up QuickBooks Online.