1. you will need to make sure you run all of the windows updates on the server.
2. run the laps installer on the computer
To install only the missing RSAT tools, run:
Get-WindowsCapability -Name RSAT* -Online | where State -EQ NotPresent | Add-WindowsCapability –Online
https://woshub.com/install-rsat-feature-windows-10-powershell/