As above, getting this error when logging in to my forum.  Just did the latest upgrade today..  I don't have any special widgets running afaik

 

Edited October 11, 20222 yr by endgrp

Hi,

Can you update the AdminCP credentials we have on file? we're unable to login to look further.

I turned off "Today's Birthdays" in the sidebar and it seems to have stopped the error from appearing.

Yes, that will indeed resolve the issue. That plugin is calling a method which no longer exists.

If you go to the support area of your admin CP, you will see an optional patch that will resolve this issue