Everything was working just fine
This error occurred to me when I made changes to my Model and did not make migration for the changes to update the database.
If you have ever made changes to your model in Code First Migration Schema
Don't forget to add migration
add-migration UpdatesToModelProperites
The above command will read all the changes you have made in the model and will write it in the Up() and Down() methods.
Then simply update your database using the below command.
update-database
This what worked for me.