Unable to # multiple accounts

[nus-pe-script]

Describe the bug
Unable to # multiple accounts to use.
The displayed error message mentions that
Account has already been created

To Reproduce
Steps to reproduce the behavior:

1. input # u/1234 p/1234
2. input # u/12345 p/12345

Expected behavior
Multiple accounts to be created and use to login the application.

Screenshots

However when you are login, after entering another login command. It suggests I could create another account.

Additional context

If only one account could be created for the entire application, perhaps it might be
good to indicate in the User Guide.

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Reported by: @lycjackie
Severity: High

_{[original: nusCS2113-AY1819S2/pe-dry-run#35]}

[nicholasleeeee]

Thank you for your issue. Yes only one account can be created. I have made it clearer in the user guide :)