WHMCS License
1) Copy and replace the Licensing.php in vendor/whmcs/whmcs-foundation/lib folder.</p >
2) Then you can open the URL of your admin: https://example.com/admin/licenseerror.php?licenseerror=change </strong >
and in the NEW LICENSE KEY field enter your new WHMCS-xxxxxxxxxxxxxxxxxxxx, then click on CHANGE LICENSE KEY.
