I am new to both Opigno and Drupal. Have just installed Opigno on platform.sh. The installation has completed without errors. But when I try to use the site URL's etc., it is asking me log in with Drupal credentials. As a part of the installation, I have not had to set up any Drupal credentials. Also, the information / documentation on the site does not suggest that I have to do any specific step relevant to this. What am I missing? Any pointer to do the correct documentation on this would also be appreciated.