ارور زیر قابل حل هست یا نه ؟

We have detected that you are already running WHMCS Version 7.1.1.
This installer script can only upgrade as far as 7.1.1 so there is no update to perform.

Looking to perform a new installation? To do so, you must first drop all existing tables from your WHMCS database, then try running the installer again. (Warning: You will lose all existing data if you do this.)