roomer | Multitenant framework for Rails using PostgreSQL | Application Framework library

Problem

I have been trying to add seo features for my Angular project by running "ng add @nguniversal/express-engine@next", but keep getting error of

An unhandled exception occurred: Cannot find module '@schematics/angular/utility/json-file'

I tried to re-install @schematics/angular, but it shows the same error, please advise what could be done to solve this problem.

Error for ng add @nguniversal/express-engine@next

Error logs

I'm trying to view SQL database table using JavaFX tableView.

I have a DBHandler class on the Server with a method to "select" all items from the table, then I store the values in resultSet. I then add the contents of the resultSet to an arrayList of object class Room using the while loop. The arrayList is then sent to the client over socket.

The client reads the object as an instance of the Room class, the object is added to another arrayList, which is added to an observableList, which is used to add the data to the Table view.

However, the code/logic does not work. On the client side I get a 'java.lang.ClassCastException: java.util.ArrayList cannot be cast to Room' error.

Client: FXMLController::

My website will not scroll vertically. This is stopping some of the content being displayed. I have tried to fix this but so far I have had no success using the the CSS overflow property. This is not scrolling in Google Chrome and is not bringing up any errors when I use the developer tools.

This is the code: