As a user, I can get suitable error if I try to log in with different users in different windows so that I can understand that I can only be logged in as one user.
Acceptance Criteria
Suitable error message and instructions in place when this happens
Story
As a user, I can get suitable error if I try to log in with different users in different windows so that I can understand that I can only be logged in as one user.
Acceptance Criteria
Tasks