"Anki Updated" Popup

When opening anki 2.1.22 after downloading, a message asking to download 2.1.31 appears while anki is syncing and it freezes there with both the “syncing” and “anki updated” windows open. The only option is to force quit. How do I get past this? (Mac version)

Older Anki versions had a bug in the update notification. You can either install the latest version, or start Anki while holding down the shift key to disable automatic syncing, then click on ignore.