Enatega Customer Application: Null error showing when new user is logging by email.

Describe the bug
A clear and concise description of what the bug is.

To Reproduce
Steps to reproduce the behavior:

Go to '...'
Click on '....'
Scroll down to '....'
See error
Expected behavior
A clear and concise description of what you expected to happen.

Screenshots

Desktop (please complete the following information):

OS: [e.g. iOS]
Browser [e.g. chrome, safari]
Version [e.g. 22]
Smartphone (please complete the following information):

Device: [e.g. iPhone6]
OS: [e.g. iOS8.1]
Browser [e.g. stock browser, safari]
Version [e.g. 22]
Additional context
Add any other context about the problem here.

The issue does not identify any files, tests, reproduction steps, environment, or expected behavior beyond a null error during email login in the customer application. Start by clarifying and reproducing the email-login flow, then locate the relevant JavaScript entry point; done should mean the null error is no longer shown and the intended login result is documented.

Written by the indexing model from the issue text.