Modern Authentication Methods now needed to continue syncing Outlook Email in non-Microsoft email ap

I upgraded to Office 2021 before the cutoff date and Outlook was working fine. All of a sudden this morning, it keeps prompting me to enter my password until the end of time. I keep getting the error: Outlook cannot synchronize subscribed folders with error 0x800ccc0e. My company uses Gmail, which I have the emails copied over into Outlook. Please help with this error message on synchronizing folders so I can continue to work in Outlook.

Thanks,
Heather DeYoung