I\'ve a table named EducationTypes and an Entity named EducationType, I renamed one of entity properties, now I\'m frequently getting Either
EducationTypes
EducationType
Either
Actually this error also happens when you just deleted the database, and your context does not realize that your database is not there.
I recreated the database, and now the error was resolved.
P.S. make sure you check database is still there when you try to run the update-database