I am getting this error when I sign in to my yahoo email "An unexpected problem has occurred (Failed to get ms

This is the error I am getting "An unexpected problem has occurred (Failed to get msginfo on message id 1_2060612_APrPjkQAAWXcR8DPbgj/ymHZ6oc)."
I am getting this error when I sign in to my yahoo email "An unexpected problem has occurred (Failed to get ms
Sounds like you are using the New Mail. There are many problems trying to load it and use it. You can return to classic by clicking Mail Classic at the top of your mail screen or use this link and click yes to opt out: http://us.mg1.mail.yahoo.com/dc/optout?s