Setting up pgAdmin 4 in web mode on a Debian based platform...
Creating configuration database...
NOTE: Configuring authentication for SERVER mode.
Enter the email address and password to use for the initial pgAdmin user account:
Email address: <input-email-address>
Password: <input-password>
Retype password: <Reenter-password>
pgAdmin 4 - Application Initialisation
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Creating storage and log directories...