I am new to server management, so if this is an obvious problem please bear with me.

In trying to make a server that has an economy based on Gold Ingots, I wanted to use the Gringotts plugin. Its perfect. However, when I load the gringotts plugin into the server, EssentialsX stops working completely. In fact, it does not load at all. Any commands/functions that come along with Essentials no longer work.

As soon as I delete the Gringotts plugin Essentials works again with no problems.

That does seem odd but I'll spin up a server with both to check why that happens. It may be something to do with how EssentialsX deals with the economy.

Also check your logs to see if EssentialsX and/or Gringotts have any error messages.