adding

app/Commands/LetsEncryptRemoveCommand.php

@@ -16,7 +16,7 @@ use LaravelZero\Framework\Commands\Command;
 class LetsEncryptRemoveCommand extends Command
 {
     // directory
-    const CERT_DIR = '/etc/certbot/';
+    const CERT_DIR = '/etc/letsencrypt/';
 
     /**
      * The signature of the command.