Describe the bug

Once a RRD proxy has been set up and you would like to migrate existing RRDs the execution of
"structure_rra_paths.php" will fail.

To Reproduce

New system, default installation. Poller running, auto discovery enabled. RRD proxy configured and running in full debug mode.
Go to CLI and execute structure_rra_paths.php.

browniebraun@browniebraun-Lenovo-ideapad-530S-14IKB:/var/www/html/cacti/cli$ php structure_rra_paths.php --proceed
NOTE: Found:5 Data Sources. Beginning Process

Warning: chgrp(): Operation not permitted in /var/www/html/cacti/cli/structure_rra_paths.php on line 379
FATAL: Could not Set Permissions for Directory '/var/www/html/cacti/rra/1/1/0'

Proxy shows no connection being established during script run.

• OS: [e.g. iOS]
  Ubuntu 22.04.1 LTS