I am having the same issue as well. Only on my blog page (index only, single blog posts work fine as well). I deactivated all plugins and it still occurs. I switched to the default theme and the error went away.
Any thoughts? Must be something in my “tribe-events” folder. Has there been any functions or calls that have been removed that may be causing this error?
Also if I downgrade to 3.0.3 there is no issues.