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

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To Reproduce
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Expected behavior
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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
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The issue names no source files, tests, or concrete reproduction steps. Start by reproducing email login in the customer application, then locate the code producing the null error and define the expected successful-login behavior before adding a focused regression test.

Written by the indexing model from the issue text.