Problem with database attributes created by myself

Hey I am having this problem in two applications that i am working on. The things is, when I log out from the app, i can’t log in again to the app because a POST error occurs. I realized that i can log in again only if a delete an attributes that I created to contain some user data.
This only occurs when i log out from the application, but if I don’t the app works fine.

Which database table attributes are causing the error?

Can you add the snap of error that you are getting.

we need more info, you say that you added a column to save some extra user data, and that column somehow prevents the authentication after a logout is used?