Did you set the proper roles of the user when creating the user and the database?
You are trying to access the application using https but we include dummy certificates in Apache when installing the application. In case you don't want to receive that error message, you will need to generate a valid certificate and configure Apache
You can also use Let's Encrypt to generate that valid certificate
Please note that this guide uses /opt/bitnami as installation directory of the stack. If you used a different one, please modify the commands to use the proper path.