Repeated "authentication failed" prompt at reboot/startup

Everytime I reboot/restart, I get a prompt to provide userID/password.I clear it with a cancel and problem gone till next restart.   I deleted an unwanted account possibly just before this started. Other than that, eMC works fine with 2 accts. One IMAP, one iCloud. Using eMC verson 6.021372.0

Hi, thank you for the attached screenshot and version number you’ve provided, what account are you having issues with, or qhat accounts are you using with eM Client? Is this a Yahoo or an Exchange account?

Thank you,
Paul