The RustDesk server libraries and binaries may not be present on your server. In this case, you'll need to use this procedure to install the components and/or update them.
On the left menu, choose “Your System” > “Update” > “Packages Center”
On the search field, type “rustdesk”
Click on Install Or Upgrade button on the RustDesk remote control software relay row
Choose the latest version and Click on Install Or Upgrade button